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building construction-ready, true-world records applications with Spark and Scala by mixing the confiscate amounts of FP and OOP
Adobe Analytics procedures billions of transactions a day across Important net and mobile homes to vigour the Adobe event Cloud. right through coincident years, they gain began to modernize their records processing stack, adopting open supply expertise enjoy Hadoop MapReduce (MR), Storm, and Spark, to identify a number of.
My group has been using Spark and Scala for roughly four years now. They began with a refactoring venture for their Video Analytics product that turned into at the nascence developed using MR and Kafka as pile blocks. That labored smartly for a while, however they stored pushing MR to acquire lower end-to-conclusion latency. At one aspect they were running it in a taut one-minute loop throughout tens of millions of activities. Their jobs were stateful and shortly they needed to add some features that could gain intended two or extra MR jobs that essential orchestration with anything enjoy Oozie.
We took this haphazard to faith Spark for an immense refactoring, inspired via past prototypes and relying on right here elements:
related to the remaining aspect, they furthermore made the reasonably courageous (on the time) altenative of adopting Scala because the core language for the refactoring. back then, their team become primarily developing backend techniques the usage of Java, so their determination seemed quite dangerous. besides the fact that children, they were encouraged to are trying it out. Most of their developers on the group had already achieved the purposeful Programming in Scala song on Coursera, and they had been snoopy to space it to get disburse of.
at the conclusion of the day, they felt that the added productiveness they would secure from using Spark with aboriginal Scala (as a substitute of the extra clunky Java APIs) become charge the inherent possibility of adopting a brand fresh language.
considering the fact that that preparatory effort, their group has developed many projects using Scala and Spark, covering a wide array of disburse situations: batch, streaming, stateful aggregations and analytics, and ETL jobs, just to identify a couple of.
The relaxation of this weblog submit will provide an overview of their training erudite over the years of using Spark and Scala. First, I’ll focus on one of the vital shortcomings of Spark that they organize after establishing the usage of the framework. Then i will interlard their reference structure they constructed to tackle these barriers and clarify how it additionally gives different advantages. within the relaxation of the blog publish, they are able to illustrate the ideas with code examples given to assist get the structure concrete. within the End you’ll observe how these adjustments gain positively helped us, and what they blueprint to tweak affecting forward.true existence with Spark: pros and cons
Spark is a customary engine for distributed statistics processing, with APIs for Scala, Java, and Python. that you may result it to a wide spectrum of data processing issues, from ETL to analytics, to ML and graph processing. Writing courses that you simply scale out comfortably with the aid of including greater employee nodes is commonly a breeze.
as an example, listed here are one of the crucial apps that their group has built:
…and their high-stage requirements:
regardless of its huge applicability, Spark isn't a well-known dispensed computing framework.
many of the APIs are extravagant flush and anchored in statistics processing. in case you peruse on the anatomy of a Spark app, it's tough to aver (without event) what code gets performed on the motive oblige and what code gets accomplished on the executors, the route it’s serialized, and what you’re taking pictures in the closures¹.
As plenty as they utter savor practical programming with simple services and free of side effects, actual programs necessity issues enjoy mistake managing, lifeless note queues, database connection pools and persistence, arbitrary initialization and shutdown hooks, and so forth. Spark lacks API assist for issues like:
This frequently potential that you simply deserve to secure inventive and locate the remedy APIs in the facts processing pipeline to accomplish these operations, devoid of permitting things enjoy serialization or uncontrolled aid advent to become a efficiency bottleneck.The “reference structure”
the entire issues above led us to create an easy template for establishing records processing apps, leveraging Spark’s strengths and dealing around its limitations. They tried to celebrate the right combination of OOP and purposeful programming, whereas decoupling as much as viable from the Spark APIs in their company code.
We additionally adopted these high-degree design desires for utter their apps:
in the relaxation of this article, they can portray how the entire pieces felicitous collectively within the context of an easy ETL app (let’s muster it Ingest) that does right here:
here is an easy obscure diagram with the a number of add-ons that get up their architecture:
Let’s boost them one at a time and notice what their main end is in the structure and how they assist us bring on the brought up design goals.
be aware: The Scala code samples will miss a considerable number of implementation or production-readiness particulars, however are in any other case copied from their creation apps and very illustrative of the ideas I’m highlighting.The main entry factor
here's simply your commonplace leading role from any language and we’re without rigor starting the processing after loading the configuration and pile the dependency tree: instantiating SparkContext, the precise streaming source from Kafka, database connections, and so forth.
You may additionally notice that we’re now not using any libraries for dependency injection and are with no grief counting on fresh and passing dependencies round as constructor or feature parameters. here's by route of design, as Spark’s dispensed nature and code serialization mechanics impose strict constraints on the place² and the way³ to create fresh objects.The utility
The “software” has a Important position in their architecture, because it glues together functions with their dependencies to create an genuine facts processing app. it is implemented as a Scala trait and models its dependencies as summary methods. this manner, they facilitate integration testing, by route of not counting on concrete Kafka queues, HBase connections, etc.
it's additionally the simplest location (study: best file) in the codebase that makes disburse of Spark APIs: DStream, RDD, radically change, and many others. This makes it workable for us to handle Spark greater enjoy a runtime for disbursed statistics processing and opens up a transparent migration path to a different facts processing framework enjoy Akka Streams or Kafka Streams.
moreover, here's the space we’re dealing with Spark complexities in order that the traffic capabilities don’t necessity to:
The capabilities get up the vast majority of their company common sense, which is fully decoupled from concerns enjoy Spark, Kafka, configuration, and many others. in the onion architectural model⁴, this often is the API layer (as adverse to infrastructure, which is what they covered thus far).
this is the space they nascence to lean heavily on the practical side of Scala. more specifically, features are carried out as Scala traits with the following self-imposed constraints:
just a brief example to get lucid the final bullet. Let’s anticipate that, as a piece of the validation, we’re losing messages and would enjoy to raise a counter. If they did this silently inner the carrier, checking out would become harder as you deserve to peruse at various the absence of whatever in the output and additionally mock the metrics registry.
an easier approach is to get disburse of a validation facts class⁷ enjoy either and return Left(validationError) or appropriate(experience), ignoring metrics altogether. This makes unit testing trivial, gives us a haphazard to address hazardous events (log to a part queue for later inspection) and they will propel metrics assortment (a aspect effect) to the outer layers.
Above they gain an easy example with the condense for a basic ingest provider that does here:
As i mentioned within the introduction, not every thing in the actual world will furthermore exist implemented with simple capabilities and free of aspect effects. The simplest instance is persisting the valid hobbies to a database. as the DB connection pool needs to exist existing on the executors (that’s the space the statistics is and they don’t want to collect it on the motive force), the query is — how can they instantiate these DB connection objects? many of the time they are not even serializable.
In Spark streaming, this would typically exist performed on the executors by using the foreachRDD/ foreachPartition APIs². within the simplest implementation, you may create it, disburse it to retailer the statistics, then raze it. here's a satisfactory strategy for primary objects with cramped overhead (e.g. HTTP customer), nevertheless it’s not feasible for more costly valued clientele enjoy Kafka and HBase (their respective doctors point out that bethink to create and reuse a long-working example per JVM).
as a route to unravel this situation, they now gain adopted the ExecutorSingleton strategy described by means of Nicola Ferraro on his blog³. here's only 1 of the factors for doing “guide” injection of substances as basic role arguments in the entire features.purposeful area modeling
As they secure subside in the stack, we’ve reached the core of their structure: the various entities that get up their domain mannequin. this is the space Scala truly shines, because the eloquent nature outfit encourages developers to create granular types and finished classification hierarchies, with out a Great deal of the ceremony essential in Java to create even the easiest POJOs.
For this, we're certainly the disburse of certainly one of my favorite features from Scala: case classes geared up in sealed trait hierarchies (also called ADTs⁵).
When coupling this with another efficient route for imposing invariants in datatypes⁶, they are able to simplify a lot of the code with the aid of counting on the compiler to enact the complicated work:
as an example, right here’s an easy DataSource. notice so that you can’t create an invalid example and that we're modeling “special” facts sources as case objects in its space of magic numbers / Intconstants:Closing suggestions
We lined lots of ground during this submit and that i’ll resist the temptation of mentioning utter of the wintry tricks we’ve erudite over the years :).
The architecture presented here has proven its strengths in fairly a number of teams within the Adobe Analytics ecosystem. Some teams gain even ported it to Java eight and are reaping most of the advantages even though they should engage with legacy APIs and current Java domain models.
looking ahead, there are nonetheless some issues that they might cherish to do:
LAS VEGAS--(enterprise WIRE)--nowadays, Adobe (Nasdaq:ADBE) kicked off summit 2017 with a record-breaking 12,000 attendees. Adobe unveiled event Cloud, a complete set of cloud features designed to provide companies everything they necessity to deliver incredible client experiences. constituted of Adobe advertising and marketing Cloud, Adobe promoting Cloud and Adobe Analytics Cloud, adventure Cloud is constructed on the Adobe Cloud Platform, Adobe’s underlying, cross-cloud architecture that unifies content and statistics. The traffic additionally announced fresh developer outfit and companion integrations as well as fresh intelligence facets for businesses powered by route of Adobe Sensei. finally, Adobe and Microsoft introduced the availability of their first set of joint options focused on remodeling customer experiences.
besides showcasing Adobe's latest know-how breakthroughs, the convention will feature Saturday evening are living’s Kate McKinnon and tremendous Bowl MVP Peyton Manning, who will participate how digital has impacted their careers. Executives from facebook, Microsoft, national Geographic, the NBA and others will exist a piece of Adobe executives on leading stage.
Introducing Adobe event Cloud
Digital has disrupted every trade and forward-searching businesses bethink that a very magnificient consumer flavor is the differentiator that separates market leaders from market laggards. an outstanding adventure is the most Important step in an extended-term relationship with a consumer and requires profound intelligence and spectacular design. in accordance with these challenges, Adobe these days brought Adobe journey Cloud, a comprehensive set of cloud capabilities designed to provide companies every cramped thing they necessity to convey notable customer experiences. made out of Adobe advertising Cloud, Adobe promoting Cloud (see part press unlock) and Adobe Analytics Cloud, event Cloud is constructed on the Adobe Cloud Platform. and since it’s from Adobe, event Cloud integrates with Adobe artistic Cloud and doc Cloud (see part press unlock).
massive Enhancements to Adobe Cloud Platform and Adobe Sensei
Adobe added fresh enhancements to its Adobe Cloud Platform, the underlying, cross-cloud architecture that unifies content and statistics. Key updates consist of fresh Sensei capabilities for traffic valued clientele in addition to fresh outfit and associate integrations obtainable through Adobe I/O, Adobe’s go-cloud developer portal. in addition, AppDynamics, Clicktale, Dun & Bradstreet, ForeSee, Mastercard, Ooyala, SapientRazorfish and others introduced fresh Adobe flavor Cloud integrations, now attainable on Adobe exchange.
Adobe Sensei, the intelligence layer in the Adobe Cloud Platform, offers consumers a unified AI and machine researching framework in addition to quick-witted functions. nowadays, Adobe released fresh Sensei capabilities for the enterprise, including Fluid Experiences, Auto-target, greater Anomaly Detection and Contribution evaluation (see part press liberate).
Adobe and Microsoft advertise Availability of Joint choices to radically change consumer Experiences
Adobe and Microsoft announced availability of their first set of joint options designed to aid corporations seriously change their customer experiences. purchasable today, these options will seriously change cross-channel experiences and crusade orchestration the usage of Adobe journey Cloud and Microsoft Cloud. moreover, the agencies announced they're collaborating on the primary open traffic ordinary to define and unify the language for advertising and marketing, income and services facts mandatory to deliver digital experiences continually at scale (see part press release).
Adobe Sneaks fresh Tech
At “Summit Sneaks,” Adobe will preview unannounced expertise in areas including AI, VR and IoT. Sneaks proffer the viewers an extraordinary – and pleasing – look to exist into the long run, showing brands how they can reimagine their present consumer experiences and company processes. Hosted by route of SNL’s Kate McKinnon, attendees will secure a sneak peek on the newest innovation coming out of Adobe’s R&D groups. Sneaks is a perennial spotlight of summit and viewers favorites often develop into piece of future product offerings.
Adobe is altering the realm via digital experiences. For greater tips, search advice from www.adobe.com.
© 2017 Adobe programs integrated. utter rights reserved. Adobe and the Adobe logo are both registered trademarks or logos of Adobe techniques included within the u.s. and/or other nations. utter different trademarks are the property of their respective owners.
Adobe advertising Cloud’s top govt, Brad Rencher, is leaving the company after essentially a decade.
Rencher, who as EVP and GM Digital flavor set the vision and approach for the utility enormous’s digital advertising platform initiatives, first joined Adobe in 2009 in the course of the acquisition of Omniture, which later grew to become Adobe Analytics, a key piece of the Adobe advertising Cloud.
Adobe describes Rencher’s departure as an “organizational change,” but it’s uncertain precisely what precipitated it – and there’s no alternative for his role as of yet.
based on Adobe, company CEO Shantanu Narayen goes to create a brand fresh “wide” organization that includes product, earnings, advertising, functions and assist with Narayen at the helm unless Adobe can learn a fresh grownup to Run it.
Adobe did not immediately respond to a request for comment.
A seasoned Adobe vet enjoy Rencher would look just enjoy the foremost candidate to steer the company group. instead of grabbing the reins, notwithstanding, Rencher will serve as a brief “special adviser” whereas Adobe hunts for someone everlasting.
Rencher is exiting at a time of untamed boom for the Adobe flavor Cloud, which serves as an umbrella for Adobe’s advertising and marketing, Analytics and promoting products. event Cloud doesn't involve Adobe’s creative or doc management equipment.
all the route through his tenure at Adobe, Rencher turned into a predominant architect of the business’s digital advertising route and at once accountable for helping construct and combine the Adobe flavor Cloud.
Rencher changed into there in 2011 when Adobe obtained its demand-side platform Demdex; in 2013 when Adobe scooped up go-channel advertising automation enterprise Neolane; three years later for the buy programmatic video platform TubeMogul; and right through the heady latter half of 2018 when Adobe spent pretty much $6.5 billion mixed to purchase ecommerce platform Magento and B2B advertising platform Marketo in short succession.
“It’s not an exaggeration to divulge that he’s played an incredible half in offering continuity, management and imaginative and prescient for creating one of the vital a hit advertising and marketing expertise carriers where so many others gain struggled,” said Joe Stanhope, a VP and a fundamental analyst at Forrester. “He leaves the community deploy for fulfillment.”
The reorg and the direct involvement of CEO Narayen additionally “shows us how severely Adobe takes their advertising and marketing cloud division and the route censorious it is to the future of the business,” Stanhope said.
“they are gearing up to pass the subsequent primary divide, which is bringing advertising Cloud and a lot of different offerings right into a large, aggressive and compelling client journey providing for companies,” he pointed out.
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User flavor might exist something to deem if you want to observe improvements in this area. Heard of it but not entirely sure of the specifics? User flavor includes utter aspects of user interaction with your company, your services and/or products. Perhaps you believe that your company’s website works well, but enact your customers agree? Not able to concede this question? Then it’s definitely a censorious time to start focusing on the user flavor of your website or mobile app.
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Note:We gain added licence costs of the tools in the overview (where possible). Many of these company websites (not surprisingly) disburse A/B testing for pricing so the charge tends to vary quite a bit, and traffic models change over time. Therefore the charge figures for each of these tools will not exist updated regularly. They were confirmed the date of this blog post’s publication.UX analytics and event-tracking tools
UX analytics and event-tracking tools enable user researchers to understand what their website visitors are doing on their website. This erudition can exist very useful in that you can quickly determine if a particular design change will exist efficient before you implement it. On the other hand, these tools aren’t able to give you an explanation, or inform you “why” a user does something. One of the most well-known tools that falls under this category is Google Analytics. But if you’re looking for more specialised tools in regards to click and event analysis, might exist magnificient to deem these:1. Clicky
Clicky registers and reports various ‘on-site’ activities, such as page views and downloads. However it furthermore shows data such as Twitter statistics. Many analytics tools update once a day, but not Clicky. This tool shows real-time statistics. The dashboard is very user-friendly, furthermore for beginners. If you select a Premium account, you gain access to a lot of other extras such as heatmaps, campaign tracking and conversions. The price? It varies from free to $19.99 a month and there is furthermore a custom option.
Website: www.clicky.com2. Chartbeat
Chartbeat focuses on content intelligence and analytics, giving the user insight into reader engagement. With this tool, you can determine where your best content and traffic sources are. Filter users by location, devise or visitor frequency and uncover which pages secure the most traffic. utter is workable with Chartbeat! Starting from $10 a month you can easily learn what utter of your visitors are up to on your website.
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Mixpanel really focuses on the user interactions with both website and mobile applications. This tool provides targeted communication with visitors (including e-mails and smart notifications), in-app A/B tests and user survey forms. Additionally, you can visualise the data collected in less than 10 minutes. Another benefit? Mixpanel offers a ‘freemium’. However, if you want more access with additional services, they gain a custom pricing model utter the route up to the enterprise level.
Website: www.mixpanel.com4. Woopra
Woopra furthermore offers real-time data-driven analytics, enabling you to easily analyse different segments and funnels on your website. The tool creates customer segments that automatically update as user behaviour changes. Using these segments and profiles, users can create funnel reports, custom reports and retention reports. Pricing for this tool is catered to both wee businesses (free and up to $1,199.95/month) and enterprises (custom pricing).
Website: www.woopra.com5. Appsee
Appsee is a platform that focuses on analytics in mobile apps. This tool makes it workable to result utter user interactions in real-time. The statistics materialize in an easy-to-use dashboard, where you can visualise, among others, heatmaps, conversion funnels and crash-recordings. Appsee offers both premium pricing and custom enterprise pricing.
Website: www.appsee.com6. Keen
Bring together utter events from your website, app, device or webstore and save it on Keen. This tool is a third-party application that shows and shares data in self-service reports and dashboards. Keen makes customer analyses much easier thanks to APIs that collect only the data that you want. In this way, you will find the right answers, which are saved in the Cloud. Keen uses ‘transparent pricing’, import that you pay after use. The more you disburse Keen, the more you pay.
Website: www.keen.io7. Piwik
Piwik is a self-hosted or cloud-based web analytics tool, which among other things, tracks what your visitors are doing on your website. This tool is a bit enjoy Google Analytics, but not entirely the same: You host and manage your own data with Piwik, rather than Google’s servers. The data is available in real-time. Piwik is free. Would you enjoy the hosted variant? Then you will pay (based on pageviews) between $29 and $49 a month. There is furthermore an enterprise option.
Website: www.piwik.orgSession recording and heatmapping tools
This is furthermore a shape of quantitative research. On one hand, you can track entire sessions, including complete recordings of how the users moves about on your website or app (session recording). On the other hand, you can recognise patterns using heatmapping at page flush to observe how users interact with the page (for example, where the mouse moves, mouse activity or where they click).1. MouseStats
With MouseStats you know exactly what your visitors are doing. View utter mouse movements, scrolls, keystrokes and clicks as a movie. Thanks to interactive heatmaps, you can observe exactly which parts of the page attract attention as well as where they don’t. The charge of MouseStats ranges between $29 to $299 a month, depending the number of recordings.
Website: www.mousestats.com2. Crazy Egg
Crazy Egg offers several types of heatmaps that enable the user to analyse visitor behaviour. Where enact they click? enact they scroll to the bottom of the page? What are they looking at? These are questions that Crazy Egg answers. Implementation of this tool is easy and the reporting features are even easier. An advantage: you can disburse Crazy Egg for free for the first thirty days. After the thirty days are up, the tool can cost between $9 and $99 per month. There are furthermore packages for premium plans that sweep between $189 to $2499 a month.
Website: www.crazyegg.com3. Smartlook
Smartlook is a tool that records everything your visitors enact on your website. It enables you to observe where your visitors gain clicked, how long they remain on a page and what information they’ve filled in (e.g. on an order form). Thanks to SmartLook you can easily determine why visitors are leaving the website, which user problems they are experiencing and why the customer ended up purchasing. The charge of this tool depends on the amount of recordings collected and stored. They proffer a freemium and packages up to €80 as well as custom packages.
Website: www.smartlook.com4. Clicktale
Clicktale is a website analytics software tool that is meant to analyse visitor behaviour. With this tool, you can observe the drop off rate per input province in the form, how far a visitor has scrolled down on a page and you can track each page for page errors. utter your data can exist linked easily to a testing tool such as VWO (read more about VWO under ‘A/B and split testing tools’) but also, for example MailChimp. The charge depends on what you would enjoy to achieve with ClickTale.
Website: www.clicktale.com5. Inspectlet
By route of videos, this tool ensures that you know exactly what your visitors are doing on your website. Each mouse movement, scroll, click and keypress is recorded. With this tool, you can determine what attracts attention, what causes confusion and when visitors leave the website whilst it the conversion funnel. The charge ranges between free and $299 a month.
Website: www.inspectlet.com6. Heat Map Tracker
Heat Map Tracker is a software tool that records and shows what every visitors is doing on the website in real-time. Through heatmaps, user behaviour and conversion optimisation, you can practically peruse over your visitor’s shoulder. The result? Better user experience, customer loyalty and sales. To disburse Heat Map Tracker, you must pay a one-time fee of $97 and thereafter, $19 a month (for a personal license) and $49 a month (for an agency license).
Website: www.heatmaptracker.comA/B and split testing tools
A/B testing (or multivariate testing) and split testing are user testing techniques used to determine which variations of a web page gain the highest success rates with your visitors. With A/B testing, you are able to compare two versions of a web page, content or an factor on the page. This shape of testing enables you to determine which version is consistent with the goals you gain set. The goal can exist anything: increasing sales, reducing the bounce rate or increasing the conversion rate. A/B testing offers real-time, quantitative data about your users and helps you get the right decisions.1. Visual Website Optimizer (VWO)
VWO is one of the easiest A/B Testing tools. It gives you the ability to easily alter headlines, buttons, pictures and other elements for testing. It furthermore offers a visual editor that can exist used to edit and design different variations of a page. With VWO you can furthermore identify sales, signups, clicks and other conversion goals, by using statistical data and results. VWO can cost somewhere between $49 (Standard) and $999 (Enterprise) a month, depending on the amount of traffic you gain on your website.
Website: www.vwo.com2. Optimizely
Optimizely is a approved testing tools that works quite simple: with just one line of code on your website, it’s up and running. It furthermore has A/B and split testing features similar to those of VWO. The tool can link automatically to among others, Google Analytics, so you can simulate test sessions. pattern for funnel tests, for example! You can furthermore disburse this tool to customise colours, graphics and text. Optimizely uses a “Pay as you go” model, charging $49 for every 1,000 monthly unique visitors that you test.
Website: www.optimizely.com3. Kissmetrics
Kissmetrics is an analytics platform that helps enlarge customer loyalty and retention rates. The Kissmetrics database has a feature that helps you with your A/B test. You can furthermore disburse this tool with your pre-existing test code, or you can integrate Kissmetrics with another A/B Testing Platform. The nice thing about Kissmetrics is that you can test two different page designs. Kissmetrics Kissmetrics costs between $220 (self-service) to $700 a month.
Website: www.kissmetrics.com4. Oracle Maxymiser
Oracle Maxymiser is an enterprise application of Oracle, which is piece of Digital Marketing Suite Oracle. With Oracle Maxymiser you can conduct simple A/B tests as well as complex, multi-variable tests. Track utter visitor behaviour on digital channels and analyse this data. That route you can display personalised content on the website. Oracle Maxymiser comes at a by a long shot higher price: the cheapest version costs $2,000 per month.
Website: www.oracle.com5. Adobe Target
Adobe Target is piece of Adobe Marketing cloud and offers an intuitive user interface that lets you create personalised web experiences, easy A/B testing and is an easy route of targeting content based on customer profiles (personalisation). Customise the interface with a great number of filtering options. This tool furthermore works well on your smartphone. The charge of the tool is unknown.
Website: www.adobe.com6. UsabilityHub
This tool is a platform where developers and designers can achieve simple usability tests. You can select your own testers or testers who gain registered at UsabilityHub. Anyone over the age of 18 can become a tester. Using this tool, you can secure insight into how your users flavor your website page. charge can sweep anywhere between free to $396 a month, depending on the amount of users.
Website: www.usabilityhub.com7. Convert
Website: www.convert.comVisual/Usability Feedback tools
Visual feedback tools are furthermore often referred to as usability feedback tools. These types of tools are used by marketeers and other user flavor specialists to improve page usability by capturing input from their users as it comes in. Using these tools, you can point to specific page elements (including forms, images, buttons or paragraphs) and provide feedback on those page elements. Once an factor is selected, the tool saves the screenshot with the user’s feedback. These tools are Great for fresh websites and apps where the bugs or any unclear content needs to exist identified quickly.1. Verify
With Verify you can collect and analyse visitor feedback from screens or test versions (mockups). You collect feedback, observe what people bethink about your design and what they believe of it. Verify is a nice app for testing ideas before they are implemented. You can secure a basic matter for $19 a month.
Website: www.verifyapp.com2. UserSnap
UserSnap makes its easier to check for bugs and other issues. It furthermore contributes to quickly communication between designers, customers and employees. At the click of a button, visitors and designers can submit a bug report from the website. You can furthermore create in-browser screenshots with this tool, so you can observe exactly what your visitor sees without needing a plug-in. Pricing for wee to Medium businesses (SMB) sweep anywhere between €69 to €329 a month and there is custom pricing for enterprises.
Website: www.usersnap.com3. Trackduck
Trackduck is a tool that allows you to highlight visual feedback on specific pages in real-time. Bug reports are sent directly to the dashboard. You can furthermore chat via the dashboard with other testers and designers. The charge is anywhere between $9 and $49 a month.
Website: www.trackduck.com4. Bugherd
Bugherd is a web-based issue tracking and project management software system for developers and designers. enjoy utter of the other tools, it furthermore has an in-page feedback option, allowing customers to report issues directly from the website. This enables you to observe exactly which parts gain been reported. Additionally, it includes project management tools, based on scrum. The software helps you metamorphose customer feedback data into actionable tasks. The tool costs anywhere between $29 and $180 a month.
Website: www.bugherd.com5. Marker
Marker is a visual feedback and bug reporting tool for web professionals. With this tool you can metamorphose screenshots from any website into a powerful bug report directly into your existing tools. What is unique about this tool is that the feedback is captured via a browser plug-in, rather than on the page itself so it must first exist installed in Chrome before it can exist used. Some key features are screenshot annotation tools, shareable links and workflow integration. Marker can exist integrated with various scrum and project management tools such as Jira, Slack, Trello and Github. A premium account costs anywhere from $19 to $119 a month.
Website: www.marker.io6. Feedback.js
Design and wireframing tools are tools focused on the creation of fresh designs and developing concepts for funnels, landing pages, etc. These types of tools aid in the communication of ideas during the progress process as they provide a visual representation of the design and lead to rapid prototyping.1. Adobe XD
Adobe XD is a vector-based tool developed and published by Adobe Inc for designing and prototyping user flavor for web and mobile apps. According to TopTal, the aggressively growing Adobe XD is one of the best product design tools speeding up the product design process.
Adobe XD handles complicated design systems and emblem libraries. It furthermore features intuitive tools for easily connecting screens and creating interactive prototypes that can exist utilized in user testing without the necessity for code.
Website: https://www.adobe.com/products/xd.html2. MockFlow
MockFlow is an online wireframe tool for software and websites, with an accent on collaboration and sharing. The tools has various functions including, drawing up user interface mockups, making design guidelines, creating and publishing websites, annotating images, and more. Pricing ranges anywhere from free (with limited use) to $39 a month (team package).
Website: www.mockflow.com3. Mockplus
Mockplus is a desktop-based application used for easy and rapid prototyping on platforms such as mobile apps, desktop apps and websites. Users enact not necessity code or technical expertise to disburse this tool. With Mockplus you can create interactive prototypes in a minimum amount of time. This tool costs $129 a year or you can select an Unlimited perpetual license for $399.user.
Website: www.mockplus.com4. Pidoco
Pidoco is a cloud-based software used to create, participate and test wireframes, mockups and prototypes. The software includes a library of drag-and-drop interface elements and users can add multiple pages and layers. Pidoco enables you to participate prototypes with clients online and has functions to facilitate feedback and back-and-forth discussion. This tool costs anywhere from $12 to $175 a month (depending on the number of vigorous projects.
Website: www.pidoco.com5. Gliffy
Gliffy is a web-based diagram editor. In this tool, users can drag and drop components and export images. Users can furthermore collaborate online and there is a version tracking role included. It is recommended for personal disburse and/or smaller businesses. Pricing ranges between $3.99 to $7.99 a month or you can select the enterprise option (custom pricing).
Website: www.gliffy.com6. Mockingbird
A web-based beta software, Mockingbird enables its users to create, link together, preview and participate wireframes from a website or app. It includes features such as drag and drop user interace (UI), smart text resizing and interactive page linking, as well as sharing. Pricing is between $12 to $85 a month (depending on the number of projects).
Website: www.gomockingbird.com7. Lucidchart
Lucidchart is a cloud-based diagramming and visualisation tool. Users can map ideas with clients and colleagues in real-time. This tools is easy to disburse – for beginners and professionals. Pricing ranges from $4.95 to $20 a month, however it can cost more depending on the number of users. There is furthermore an enterprise option.
Website: www.lucidchart.comChoosing the right tools for your business
As you can see, there is a lot to select from, no matter what your necessity is. Making the right altenative utter comes down to what you want to achieve and how far along your team or company is in terms of maturity.
So first things first. gain some goals in mind for what you want to achieve using the tool(s). Then boost a peruse at how these tools felicitous into your budget. While there are several tools that cater their services more towards enterprise businesses, there are furthermore more cost-efficient options for smaller companies who, for example, might profit more from a typical SaaS delivery model in which you pay per disburse (e.g. depending on how many users or website visitors you have). And lastly, don’t forget about the technical limitations. This includes factors such as IT restrictions when it comes to privacy or security (e.g. how and where data is stored). Depending on the possibilities IT-wise, you can select between a self-hosted, open source solution or an enterprise solution that will answer the needs of a larger organisation.
We hope this overview provides you with some inspiration in finding suitable UX tools.
Article originally published by Kees Wolters at Mopinion.
In this special guest feature, Tyrone Pike, President & CEO of FileShadow, Inc., believes the number of files transferred daily makes it extremely difficult to manage manually, but AI is improving cloud technology to exploit the influx. Applying AI to cloud storage enables users to gather, analyze, catalog and protect more data than ever before. With more than 35 years of flavor in the high-tech sector, Tyrone has held numerous top executive positions in software, software systems integration and networking infrastructure companies, including Solid Instance, Sparxent Inc., Bravara Communication, Inc. and InterNAP Network Services Corporate. He serves as the Chairman of the Board of Solid Instance, Inc., and holds an AB in Architecture from Princeton University.
Tech gurus are not surprised to hear that 2.5 quintillion bytes of data are generated every day. The role of cloud technology in how businesses and prosumers store and manage this data is enormous.
But because cloud technology has emerged only recently as a vital tool for businesses, and because businesses and individuals gain dumped their data into cloud applications without a strategy (or gain resisted affecting to the cloud because they gain no strategy), there are quite a few shortcomings. Many cloud applications gain weak search capabilities. Human error, and the sheer amount of searchable data now being produced innately contributes to misplaced files across multiple cloud platforms. It’s easy to forget a filename, or where a file is stored, and PDF documents don’t always present up in a keyword search if there is no keyword in the filename.
The number of files transferred daily makes it extremely difficult to manage manually, but artificial intelligence (AI) is improving cloud technology to exploit the influx. Applying AI to cloud storage enables users to gather, analyze, catalog and protect more data than ever before.
Here are a few examples of AI solutions in cloud computing:
Digital Asset Management
Take the aforementioned example of lost or hard-to-find files. AI is now smart enough to know more information about your files than you could ever find out manually. Technology from Google and IBM scans images to determine key characteristics, including image location and context. For example, you may gain pictures of your sailing excursion in Boston, but you didn’t boost the time to title or manually tag them. AI can examine each image and recognize pictures with sails or sailboats in them, along with other related characteristics such as ocean, boat, water, etc. It can then tag those images with utter of those words for easy searching.
These identical AI tools can furthermore tag a file with the location where it was taken, making it much easier to find photos of “sailing in Boston” than manually scouring through your cloud storage to try to find the photos.
AI can achieve optical character recognition (OCR) on PDF’s, allowing you to find a word in a document that hasn’t been indexed in a regular search engine. For example, you could find a specific term in a condense from the 1980s that referenced labor you did with a client. Searching for the company title would yield instances of that company title in documents, even if the company’s title wasn’t included in the title.
And, these technologies aren’t treating your cloud data in silos. Services can now connect to and search in multiple cloud storage repositories, such as Box, Dropbox, Google Drive, Adobe Creative Cloud, OneDrive or another account.
There’s no shortage of potential uses of machine learning and artificial intelligence in data science, namely in aerial imagery as a service. Also, cloud delivery enables easy access to an entire world of aerial captures from any device.
With high-resolution aerial maps in 2D and 3D, machine algorithms are now able to immediately detect stationary features on the ground without human interaction, such as roadways, buildings, swimming pools, solar panels, patios, parking lots, trees, etc. Applications involve drone delivery, smart cities, autonomous driving, along with several engineering, construction and architecture disburse cases.
Virtual aide Development
Thanks to cloud computing and advances in machine learning, virtual assistants (VAs) created by Amazon, Google and Apple gain quickly become a fixture in consumer homes. These companies are developing AI systems which can learn fresh words and how to carry on a conversation.
Cloud computing could exist key in achieving this goal by storing the data which the AI accesses to respond to inquiries and learn fresh things. As AI learns, it can impart this fresh data back to the cloud, improving future AI as well.
A significant application of digital assistants is boosting workplace productivity and workflow. Speech-to-text can exist used for email dictation and to transcribe meeting notes. Text-to-speech can exist used to read written content aloud. Speech recognition can allow for conversational interactions and assignment management with the VA and “sentiment analysis” can detect overall morale in an enterprise through speech analytics.
Analytics and traffic Intelligence
Companies can now use machine algorithms to identify insights in great data sets stored in the Cloud in actual time so that decision-makers can determine trends, patterns, behaviors, and prognosticate risk and potential outcomes to get recommendations. This has the potential to save time, money and optimize company logistics and resources.
Business intelligence (BI) dashboards enjoy SAP, NetSuite, Oracle and Microsoft Dynamics-NAV can now process a much wider variety of data than before, so users trap insights that previously were lost in the data.
This predictive technology shifts the traditional role of BI from reactionary to proactive.
Last month, IBM Corp. launched IBM Security Connect which, according to the company, is “the first security cloud platform built on open technologies, with AI at its core, to dissect federated security data across previously unconnected tools and environments.”
IBM Security Connect allows vendors and developers to apply cloud technology, machine learning and AI to cybersecurity products to enlarge their effectiveness. Through predictive analytics, the platform detects suspicious behavior which will assist cybersecurity staff who deal with threats on a daily basis.
Developments in cloud capabilities and AI will exist entertaining to watch because one will only exist improved with the progress of the other, guaranteeing infiltration in both their professional and personal lives.
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Building production-ready, real-world data applications with Spark and Scala by mixing the right amounts of FP and OOP
Adobe Analytics processes billions of transactions a day across major web and mobile properties to power the Adobe flavor Cloud. During recent years, they gain started to modernize their data processing stack, adopting open source technology enjoy Hadoop MapReduce (MR), Storm, and Spark, to title a few.
My team has been using Spark and Scala for about four years now. They started with a refactoring project for their Video Analytics product that was initially developed using MR and Kafka as pile blocks. That worked well for some time, but they kept pushing MR to obtain lower end-to-end latency. At one point they were running it in a taut one-minute loop across millions of events. Their jobs were stateful and soon they needed to add some features that would gain meant two or more MR jobs that needed orchestration with something enjoy Oozie.
We took this opportunity to deem Spark for a major refactoring, encouraged by earlier prototypes and relying on the following features:
Related to the last point, they furthermore made the rather courageous (at the time) determination of adopting Scala as the core language for the refactoring. Back then, their team was mostly developing backend systems using Java, so their determination seemed rather risky. However, they were encouraged to try it out. Most of their developers on the team had already completed the Functional Programming in Scala track on Coursera, and they were snoopy to set aside it to use.
At the End of the day, they felt that the extra productivity they would secure from using Spark with aboriginal Scala (instead of the more clunky Java APIs) was worth the inherent risk of adopting a fresh language.
Since that initial effort, their team has developed many projects using Scala and Spark, covering a wide sweep of disburse cases: batch, streaming, stateful aggregations and analytics, and ETL jobs, just to title a few.
The relaxation of this blog post will give an overview of their lessons erudite over the years of using Spark and Scala. First, I’ll dispute some of the shortcomings of Spark that they discovered after developing using the framework. Then I will interlard their reference architecture they built to address these limitations and interpret how it furthermore provides other benefits. In the relaxation of the blog post, they will illustrate the concepts with code examples given to assist get the architecture concrete. In the End you’ll observe how these changes gain positively helped us, and what they blueprint to tweak affecting forward.Real life with Spark: Pros and cons
Spark is a common engine for distributed data processing, with APIs for Scala, Java, and Python. You can apply it to a wide spectrum of data processing problems, from ETL to analytics, to ML and graph processing. Writing programs that you scale out simply by adding more worker nodes is generally a breeze.
For example, here are some of the apps that their team has built:
…and their high-level requirements:
Regardless of its wide applicability, Spark is not a generic distributed computing framework.
Most of the APIs are lofty flush and anchored in data processing. If you peruse at the anatomy of a Spark app, it is difficult to divulge (without experience) what code gets executed on the driver and what code gets executed on the executors, how it’s serialized, and what you’re capturing in the closures¹.
As much as they utter savor functional programming with simple functions and free of side effects, actual programs necessity things enjoy mistake handling, lifeless note queues, database connection pools and persistence, arbitrary initialization and shutdown hooks, etc. Spark lacks API uphold for things like:
This generally means that you necessity to secure creative and find the right APIs in the data processing pipeline to accomplish these operations, without allowing things enjoy serialization or uncontrolled resource creation to become a performance bottleneck.The “reference architecture”
All the concerns above led us to create a simple template for developing data processing apps, leveraging Spark’s strengths and working around its limitations. They tried to apply the right mix of OOP and functional programming, while decoupling as much as workable from the Spark APIs in their traffic code.
We furthermore adopted these high-level design goals for utter their apps:
In the relaxation of this article, they will portray how utter the pieces felicitous together in the context of a simple ETL app (let’s muster it Ingest) that does the following:
Here is a simple obscure diagram with the various components that get up their architecture:
Let’s boost them one by one and observe what their main purpose is in the architecture and how they assist us deliver on the stated design goals.
Note: The Scala code samples will leave out various implementation or production-readiness details, but are otherwise copied from their production apps and very illustrative of the concepts I’m highlighting.The main entry point
This is just your typical main role from any language and we’re simply starting the processing after loading the configuration and pile the dependency tree: instantiating SparkContext, the actual streaming source from Kafka, database connections, etc.
You may notice that we’re not using any libraries for dependency injection and are simply relying on fresh and passing dependencies around as constructor or role parameters. This is by design, as Spark’s distributed nature and code serialization mechanics impose strict constraints on where² and how³ to create fresh objects.The application
The “application” has a central role in their architecture, as it glues together services with their dependencies to create an actual data processing app. It is implemented as a Scala trait and models its dependencies as abstract methods. This way, they facilitate integration testing, by not relying on concrete Kafka queues, HBase connections, etc.
It is furthermore the only space (read: only file) in the codebase that makes disburse of Spark APIs: DStream, RDD, transform, etc. This allows us to handle Spark more enjoy a runtime for distributed data processing and opens up a lucid migration path to another data processing framework enjoy Akka Streams or Kafka Streams.
Moreover, this is where we’re dealing with Spark complexities so that the traffic services don’t gain to:
The services get up the majority of their traffic logic, which is completely decoupled from concerns enjoy Spark, Kafka, configuration, etc. In the onion architectural model⁴, this would exist the API layer (as opposed to infrastructure, which is what they covered so far).
This is where they start to lean heavily on the functional side of Scala. More specifically, services are implemented as Scala traits with the following self-imposed constraints:
Just a quick example to clarify the last bullet. Let’s assume that, as piece of the validation, we’re dropping messages and would enjoy to enlarge a counter. If they did this silently inside the service, testing would become harder as you necessity to test the absence of something in the output and furthermore mock the metrics registry.
A simpler strategy is to disburse a validation data type⁷ enjoy Either and return Left(validationError) or Right(event), ignoring metrics altogether. This makes unit testing trivial, gives us an opportunity to exploit unpleasant events (log to a part queue for later inspection) and they can propel metrics collection (a side effect) to the outer layers.
Above they gain a simple example with the condense for a basic ingest service that does the following:
As I mentioned in the introduction, not everything in the actual world can exist implemented with simple functions and free of side effects. The simplest example is persisting the valid events to a database. As the DB connection pool needs to exist present on the executors (that’s where the data is and they don’t want to collect it on the driver), the question is — how enact they instantiate these DB connection objects? Most of the time they are not even serializable.
In Spark streaming, this would typically exist done on the executors by using the foreachRDD/ foreachPartition APIs². In the simplest implementation, one can create it, disburse it to save the data, then raze it. This is a fine strategy for simple objects with cramped overhead (e.g. HTTP client), but it’s not feasible for more expensive clients enjoy Kafka and HBase (their respective docs indicate that you should create and reuse a long-running instance per JVM).
In order to unravel this issue, they gain adopted the ExecutorSingleton strategy described by Nicola Ferraro on his blog³. This is just one of the reasons for doing “manual” injection of resources as simple role arguments in utter of the services.Functional domain modeling
As they secure lower in the stack, we’ve reached the core of their architecture: the various entities that get up their domain model. This is where Scala truly shines, as the eloquent nature system encourages developers to create granular types and comprehensive nature hierarchies, without much of the ceremony needed in Java to create even the simplest POJOs.
For this, they are mainly using one of my favorite features from Scala: case classes organized in sealed trait hierarchies (also called ADTs⁵).
When coupling this with another useful technique for enforcing invariants in datatypes⁶, they can simplify a lot of the code by relying on the compiler to enact the difficult work:
As an example, here’s a simple DataSource. Note that you can’t create an invalid instance and that they are modeling “special” data sources as case objects instead of magic numbers / Intconstants:Closing thoughts
We covered a lot of ground in this post and I’ll resist the temptation of mentioning utter the wintry tricks we’ve erudite over the years :).
The architecture presented here has proven its strengths in quite a few teams in the Adobe Analytics ecosystem. Some teams gain even ported it to Java 8 and are reaping many of the benefits even if they gain to interact with legacy APIs and existing Java domain models.
Looking forward, there are soundless some things that they would enjoy to do:
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ComputerAssociates [6 Certification Exam(s) ]
Consultant [2 Certification Exam(s) ]
Counselor [4 Certification Exam(s) ]
CPP-Institue [2 Certification Exam(s) ]
CPP-Institute [1 Certification Exam(s) ]
CSP [1 Certification Exam(s) ]
CWNA [1 Certification Exam(s) ]
CWNP [13 Certification Exam(s) ]
Dassault [2 Certification Exam(s) ]
DELL [9 Certification Exam(s) ]
DMI [1 Certification Exam(s) ]
DRI [1 Certification Exam(s) ]
ECCouncil [21 Certification Exam(s) ]
ECDL [1 Certification Exam(s) ]
EMC [129 Certification Exam(s) ]
Enterasys [13 Certification Exam(s) ]
Ericsson [5 Certification Exam(s) ]
ESPA [1 Certification Exam(s) ]
Esri [2 Certification Exam(s) ]
ExamExpress [15 Certification Exam(s) ]
Exin [40 Certification Exam(s) ]
ExtremeNetworks [3 Certification Exam(s) ]
F5-Networks [20 Certification Exam(s) ]
FCTC [2 Certification Exam(s) ]
Filemaker [9 Certification Exam(s) ]
Financial [36 Certification Exam(s) ]
Food [4 Certification Exam(s) ]
Fortinet [13 Certification Exam(s) ]
Foundry [6 Certification Exam(s) ]
FSMTB [1 Certification Exam(s) ]
Fujitsu [2 Certification Exam(s) ]
GAQM [9 Certification Exam(s) ]
Genesys [4 Certification Exam(s) ]
GIAC [15 Certification Exam(s) ]
Google [4 Certification Exam(s) ]
GuidanceSoftware [2 Certification Exam(s) ]
H3C [1 Certification Exam(s) ]
HDI [9 Certification Exam(s) ]
Healthcare [3 Certification Exam(s) ]
HIPAA [2 Certification Exam(s) ]
Hitachi [30 Certification Exam(s) ]
Hortonworks [4 Certification Exam(s) ]
Hospitality [2 Certification Exam(s) ]
HP [750 Certification Exam(s) ]
HR [4 Certification Exam(s) ]
HRCI [1 Certification Exam(s) ]
Huawei [21 Certification Exam(s) ]
Hyperion [10 Certification Exam(s) ]
IAAP [1 Certification Exam(s) ]
IAHCSMM [1 Certification Exam(s) ]
IBM [1532 Certification Exam(s) ]
IBQH [1 Certification Exam(s) ]
ICAI [1 Certification Exam(s) ]
ICDL [6 Certification Exam(s) ]
IEEE [1 Certification Exam(s) ]
IELTS [1 Certification Exam(s) ]
IFPUG [1 Certification Exam(s) ]
IIA [3 Certification Exam(s) ]
IIBA [2 Certification Exam(s) ]
IISFA [1 Certification Exam(s) ]
Intel [2 Certification Exam(s) ]
IQN [1 Certification Exam(s) ]
IRS [1 Certification Exam(s) ]
ISA [1 Certification Exam(s) ]
ISACA [4 Certification Exam(s) ]
ISC2 [6 Certification Exam(s) ]
ISEB [24 Certification Exam(s) ]
Isilon [4 Certification Exam(s) ]
ISM [6 Certification Exam(s) ]
iSQI [7 Certification Exam(s) ]
ITEC [1 Certification Exam(s) ]
Juniper [64 Certification Exam(s) ]
LEED [1 Certification Exam(s) ]
Legato [5 Certification Exam(s) ]
Liferay [1 Certification Exam(s) ]
Logical-Operations [1 Certification Exam(s) ]
Lotus [66 Certification Exam(s) ]
LPI [24 Certification Exam(s) ]
LSI [3 Certification Exam(s) ]
Magento [3 Certification Exam(s) ]
Maintenance [2 Certification Exam(s) ]
McAfee [8 Certification Exam(s) ]
McData [3 Certification Exam(s) ]
Medical [69 Certification Exam(s) ]
Microsoft [374 Certification Exam(s) ]
Mile2 [3 Certification Exam(s) ]
Military [1 Certification Exam(s) ]
Misc [1 Certification Exam(s) ]
Motorola [7 Certification Exam(s) ]
mySQL [4 Certification Exam(s) ]
NBSTSA [1 Certification Exam(s) ]
NCEES [2 Certification Exam(s) ]
NCIDQ [1 Certification Exam(s) ]
NCLEX [2 Certification Exam(s) ]
Network-General [12 Certification Exam(s) ]
NetworkAppliance [39 Certification Exam(s) ]
NI [1 Certification Exam(s) ]
NIELIT [1 Certification Exam(s) ]
Nokia [6 Certification Exam(s) ]
Nortel [130 Certification Exam(s) ]
Novell [37 Certification Exam(s) ]
OMG [10 Certification Exam(s) ]
Oracle [279 Certification Exam(s) ]
P&C [2 Certification Exam(s) ]
Palo-Alto [4 Certification Exam(s) ]
PARCC [1 Certification Exam(s) ]
PayPal [1 Certification Exam(s) ]
Pegasystems [12 Certification Exam(s) ]
PEOPLECERT [4 Certification Exam(s) ]
PMI [15 Certification Exam(s) ]
Polycom [2 Certification Exam(s) ]
PostgreSQL-CE [1 Certification Exam(s) ]
Prince2 [6 Certification Exam(s) ]
PRMIA [1 Certification Exam(s) ]
PsychCorp [1 Certification Exam(s) ]
PTCB [2 Certification Exam(s) ]
QAI [1 Certification Exam(s) ]
QlikView [1 Certification Exam(s) ]
Quality-Assurance [7 Certification Exam(s) ]
RACC [1 Certification Exam(s) ]
Real-Estate [1 Certification Exam(s) ]
RedHat [8 Certification Exam(s) ]
RES [5 Certification Exam(s) ]
Riverbed [8 Certification Exam(s) ]
RSA [15 Certification Exam(s) ]
Sair [8 Certification Exam(s) ]
Salesforce [5 Certification Exam(s) ]
SANS [1 Certification Exam(s) ]
SAP [98 Certification Exam(s) ]
SASInstitute [15 Certification Exam(s) ]
SAT [1 Certification Exam(s) ]
SCO [10 Certification Exam(s) ]
SCP [6 Certification Exam(s) ]
SDI [3 Certification Exam(s) ]
See-Beyond [1 Certification Exam(s) ]
Siemens [1 Certification Exam(s) ]
Snia [7 Certification Exam(s) ]
SOA [15 Certification Exam(s) ]
Social-Work-Board [4 Certification Exam(s) ]
SpringSource [1 Certification Exam(s) ]
SUN [63 Certification Exam(s) ]
SUSE [1 Certification Exam(s) ]
Sybase [17 Certification Exam(s) ]
Symantec [134 Certification Exam(s) ]
Teacher-Certification [4 Certification Exam(s) ]
The-Open-Group [8 Certification Exam(s) ]
TIA [3 Certification Exam(s) ]
Tibco [18 Certification Exam(s) ]
Trainers [3 Certification Exam(s) ]
Trend [1 Certification Exam(s) ]
TruSecure [1 Certification Exam(s) ]
USMLE [1 Certification Exam(s) ]
VCE [6 Certification Exam(s) ]
Veeam [2 Certification Exam(s) ]
Veritas [33 Certification Exam(s) ]
Vmware [58 Certification Exam(s) ]
Wonderlic [2 Certification Exam(s) ]
Worldatwork [2 Certification Exam(s) ]
XML-Master [3 Certification Exam(s) ]
Zend [6 Certification Exam(s) ]
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