MODERN WEB APPLICATIONS INFRASTRUCTURE PRACTICES, FLOWS AND TOOLS ! $CUGFQP4'#.UVQTKGU

EPAM Systems 2 ! ! " # IGOR_ALPERT@EPAM.COM HTTP://UA.LINKEDIN.COM/IN/IALPERT IGOR ALPERT

EPAM Systems 3 Application ! ! &GXGNQRGT

EPAM Systems 4 Application CSS JS HTML ! ! +%CP(62

5 Application EPAM Systems $ Feature #1 Feature #2 Bug fixing ! 6JG[CEVCUCVGCO

Logs 6 Application EPAM Systems $ % ! 5QWTEGEQFG )KICD[VGUQHFGDWI

7 Application EPAM Systems Logs Doc ! $ % %QOOGPVU CPFGZCORNGU

8 Application $ Logs Config Docs ! % &KHHDGVYGGPFGXCPFRTQFWEVKQP EPAM Systems

Packages 9 Application $ Config ! % L3WGT[CPFHTKGPFU EPAM Systems Logs Docs

10 Application $ Logs Docs Config Tests ! Packages % *CRR[RCVJ EPAM Systems

11 Application $ & ! % /CIKEDWKNFU[UVGO EPAM Systems

12 Application 0.5 $ 0.8 1.0 ! & % #NRJC$GVC4% EPAM Systems

13 Application 0.5 $ 0.8 1.0 ! Dev Test Prod & % &GXU3#5WRRQTV%NKGPV EPAM Systems

14 Application 0.5 $ 0.8 1.0 ! Dev Test Prod APP DB SV & % ' #RR5GTXGT EPAM Systems

DB DB DB DB ' ' ' ' 15 Application $ ! & % " 6QPUQHUGTXGTU CPF&CVC$CUGU EPAM Systems .QCFDCNCPEGT

16 Application $ ! & % " 7 Errors Logs Metrics 7UGHWNKPHQTOCVKQPNKXGUJGTG EPAM Systems

17 Agenda ! $ DEVELOPMENT
 WORKFLOW % SOURCE
 MANAGEMENT & BUILD
 PIPELINE " DEPLOY PLATFORMS 7 MONITORING
 METRICS CONTINUOUS INTEGRATION # EPAM Systems

$ DEVELOPMENT WORKFLOW

EPAM Systems 19 DEVELOPMENT WORKFLOW $ DEV $ ( Managers ) QA 3#.GCF/CPWCN#WVQOCVKQP #TEJKVGEV6GEJ.GCF&GXGNQRGTU #EEQWPV/CPCIGT#PCN[VKE Support % 5WRRQTV&GX1RU2TQDNGOOCPCIGOGPV

EPAM Systems 20 DEVELOPMENT WORKFLOW $ DEV $ ( Managers ) QA #NYC[UJCXGUQOGňVKP[ʼnEJCPIG 6JG[YCPVUVCDKNKV[ 6JG[YCPVVQEQFG VQTGSWKTGOGPVUCPFUVQTKGU #UC7UGT+YCPVŎ -PQYPDWIU6QQOWEJVKOGVQFQHWNNTGITGUUKQP DGVVGTVQWUGRTGXKQWUňUVCDNGʼnXGTUKQP 0GYHGCVWTGU6JG[YCPVVQIQNFGPRNCVGVJGKTEQFG 6JG[YCPVVQTGFWEGVGEJPKECNFGRV Support % 6JG[YCPVUKORNKEKV[ 0QOQTGUWFFGPRNCVHQTO EJCPIGU

EPAM Systems 21 DEVELOPMENT WORKFLOW $ ( Managers ) QA DEV $ #EVYKVJ+PVGITKV[UJCTGFIQCNU Support %

EPAM Systems 22 DEVELOPMENT WORKFLOW $ ( DESIGN ) TESTING & BUILD, DEPLOY a BUG FIX ' LAUNCH DEVELOP $ 2-4 WEEKS ITERATION

EPAM Systems 23 DEVELOPMENT WORKFLOW #WVQOCVGFVGUVU #WVQOCVGFDWKNF %QNNCDQTCVKXGFGXGNQROGPV 2NCPCPF&GUKIP 9TKVGCUOWEJHCKNKPIVGUVUCURQUUKDNGVQ EQXGTTGSWKTGOGPVU 'CEJUQWTEGEJCPIGVTKIIGTUYJQNG DWKNFRKRGNKPGVQTWP %QFGHGCVWTGUYKVJVGUVKPOKPF 6JKPMJQY[QWTHGCVWTGYKNNDG KORNGOGPVGFCPFKPVGITCVGFYKVJ QVJGTHGCVWTGU & ( * $ % +PVGITCVKQP 4GCNVKOGOQPKVQTKPICPFHGGFDCEM UP TO 1 DAY ITERATION $

24 DEVELOPMENT WORKFLOW EPAM Systems SERVERS 1. NGINX 2. APACHE HTTPd 3. TOMCAT 4. IIS 5. NODEJS 6. EXPRESS 7. … STYLES 1. TWITTER BOOTSTRAP 2. ZURB FOUNDATION 3. COMPASS 4. SASS 5. LESS 6. STYLUS 7. CUSTOM SOLUTION FRAMEWORKS 1. ANGULARJS 2. BACKBONE 3. EXTJS 4. SENCHA TOUCH 5. EMBERJS 6. METEOR 7. DERBY 8. CUSTOM SOLUTION TESTING 1. JASMINE 2. MOCHA 3. BUSTER 4. QUNIT 5. KARMA 6. PROTRACTOR 7. NIGHTWATCH 8. INTERN 9. WEBDRIVER.IO 10.CUSTOM SOLUTION OS 1. WINDOWS 2. OSX 3. UBUNTU 4. CENTOS 5. FREEBSD 6. COREOS TOOLS 1. GRUNT 2. GULP 3. NPM 4. BOWER 5. YEOMAN 6. CUSTOM SOLUTION DATABASES 1. MONGODB 2. COUCHDB 3. RIAK 4. REDIS 5. CASSANDRA SERVICES 1. AMAZON 2. NODEJITSU 3. HEROKU 4. MONGOLAB 5. FIREBASE 6. JOYENT 7. PUSHER 8. DOCKER $ 6QPUQHTGCF[VQWUG 1RVKQPUHQT[QWT RTQLGEV SERVER SIDE 1. PHP 2. RUBY 3. PYTHON 4. … !

EPAM Systems 25 DEVELOPMENT WORKFLOW $ VIRTUAL MACHINE Your toolset will ask for them as a dependency Works better and faster on Unix based systems NODEJS, RUBY, PYTHON Ability to compile native modules — easier to “make from source” then in Windows Building a Module in Windows WINDOWS node-gyp, Python, shell, VS, … ;QWTHTKGPFU 55*0Q)7+ %JGH2WRRGV8

EPAM Systems 26 DEPENDENCY MANAGEMENT $ Packager for OSX, uses formulas to install software Homebrew Mac OSX brew install [package] Package manager for Debian GNU/Linux distribution and its variants Advanced Packaging Tool Ubuntu apt-get install [package] The Yellowdog Updater, Modified (yum) is an open-source command-line package management utility for Linux operating Yum CentOS yum install [package] Chocolatey NuGet is a Machine Package Manager, somewhat like apt-get, but built with Windows in mind Chocolatey Windows choco install [package] &'$ 42/

EPAM Systems 27 DEPENDENCY MANAGEMENT $ PRCE NGINX OPENSSL MAKEDEPEND PKG-CONFIG GIT GIT-FLOW brew install git-flow brew install nginx

EPAM Systems 28 DEPENDENCY MANAGEMENT $ NVM APP1 Node 0.11x NVM APP2 Node 0.10.31 5VKNNVJGUCOGRTQLGEV

EPAM Systems 29 DEPENDENCY MANAGEMENT $ Node Version Manager - Simple bash script to manage multiple active node.js versions NodeJS NVM https://github.com/creationix/nvm RVM is the Ruby enVironment Manager. It manages Ruby application environments and enables switching between them Ruby RVM https://github.com/wayneeseguin/rvm It creates an environment that has its own installation directories, that doesn’t share libraries with other virtualenv environments Python virtualenv https://github.com/pypa/virtualenv A Node version manager for the windows folks out there. Inspired by n and nodenv NodeJS Nodist https://github.com/marcelklehr/nodist 9KPFQYU

EPAM Systems 30 DEPENDENCY MANAGEMENT $ NPM BOWER manager install "dependencies": { "": "", "": "", "": "" }, "devDependencies": { "": "" } "dependencies": { "": "", "": "", "": "" }, "devDependencies": { "": "" } manager install manager install +PVGTHCEGKUVJGUCOG

EPAM Systems 31 DEPENDENCY MANAGEMENT $ NPM GRUNT PACKAGE.JSON LODASH ASYNC KARMA Packages: npm install npm install —save Downloads: Corporate mirrors npm init &QPņVHQTIGVVQ WRFCVG[QWTRCEMCIGU DEV-DEPS https://docs.npmjs.com/

EPAM Systems 32 DEPENDENCY MANAGEMENT $ BOWER LODASH BOWER BACKBONE JQUERY UNDERSCORE BOOTSTRAP Packages: bower init bower install npm install -g http://bower.io/ (QTHTQPVGPF

& BUILD
 PIPELINE

EPAM Systems 34 BUILD PIPELINE & Source Concatenate Uglify SourceMaps Test Karma Protractor Mocha Coverage Preprocess LESS SASS Compass Assets Templates CSS HTML processing Images optimization Watch LiveReload Rebuild Serve Custom ChangeLog Notifications console.debug KP[QWTDWKNFRKRGNKPG 6CUMUVQCWVQOCVG

EPAM Systems 35 GRUNT BUILD PIPELINE ! Packages: grunt grunt coffee:app jshint: { // define the files to lint files: ['gruntfile.js', 'src/**/*.js', 'test/**/*.js'], // configure JSHint options: { // more options here globals: { jQuery: true, console: true, module: true } } } Gruntfile.js Gruntfile.coffee http://gruntjs.com/ http://gruntjs.com/plugins Good for file operations like copy/move/save. Configuration over code. Better for small projects with small amount of files. FILE BASED Most popular JS task runner. Almost any possible task is available as plugin. You can perform build-in or custom operations. Sync/ Async TONS OF PLUGINS 1 2 ITWPVEQPVTKDLUJKPV

EPAM Systems 36 GULP BUILD PIPELINE ! var gulp = require('gulp'); ! gulp.task('default', function() { // place code for your default task here }); gulpfile.js http://gulpjs.com http://gulpjs.com/plugins/ Packages: gulp grunt coffee npm install --save-dev gulp No temporary files. Code over Configuration. Much more faster then Grunt for file-content processing operations. STREAM BASED Only 4 API methods: task, watch, src, dest. Easy to write complex flows. EASY API 1 2 ZHCUVGT

EPAM Systems 37 YEOMAN BUILD PIPELINE ! http://gulpjs.com http://gulpjs.com/plugins/ Generators: ~1100 npm install -g generator-angular yo angular npm install -g yo $ yo angular:controller myController $ yo angular:directive myDirective $ yo angular:filter myFilter $ yo angular:service myService Pre-packed with test suites KARMA TESTS Easy scaffolding system to generate application components SCAFFOLDING Comes with build-in live-reload and grunt task SERVER 1 2 3 ITWPVUGTXG

EPAM Systems 38 BUILD PIPELINE SLUSH https://www.npmjs.org/package/slush BROCCOLI https://www.npmjs.org/package/broccoli http://indigounited.com/automaton/ AUTOMATION JAM https://github.com/caolan/jam BRUNCH http://brunch.io/ https://github.com/nickjanssen/angus ANGUS !

! " SOURCE
 MANAGEMENT

EPAM Systems 40 SOURCE " GIT Cheap branching — just a reference to commit. Lots of possible merging strategies and conflict resolving. History rewrite EASY BRANCHING AND MERGING You can work alone or with a team. You can work with or without central server. Even without network connection. DISTRIBUTED You can clone whole repo/branch or just a few commits. All meta-data is stored in one place ~/.git FAST 1 2 3 " git init ! git add git commit ! git push —force ! git rebase -i git merge ! git tag -a %QPHNKEVTGUQNXGF

EPAM Systems 41 SOURCE " GITLAB You can integrate it with your own infrastructure, users base, private services etc PRIVATELY HOSTED Fully manageable and configurable Same capabilities — collaboration, forking, wiki and JIRA TRUSTED BY ENTERPRISE Hosted on GitHub. You can contribute and write your own features OPEN-SOURCE 1 2 3 - *CRR[%NKGPVU

EPAM Systems 42 SOURCE " GITHUB You are able to create branches, tags, pull-requests, edit and commit files directly from browser WEB INTERFACE Do code-review with your team, leave comments, track issues and maintain WIKI pages CODE REVIEW AND COLLABORATION You can fork and contribute to any public repository. Home for open-source projects FORK, PULL REQUEST 1 2 3 Mirror mirror on the wall, who forks best of them all?

EPAM Systems 43 SOURCE " BITBUCKET Unlike GitHub this service will allow you to create *unlimited* amount of private repositories. FREE PRIVATE REPOS Natively integrates with Atlasssian software stack. Trusted by Enterprise. ENTERPRISE ORIENTED Spooning - with Bitbucket is a pair programming process as an opposite to forking SPOONING vs. FORKING 1 2 3 ň$KVDWEMGVURQQPKPI ŃLWUV)QQINGKV

EPAM Systems 44 SOURCE " BRANCHING MODELS Centralized Gitflow Github Feature branch Commit Commit Commit Commit REBASE SQUASH FEATURE BRANCH … REBASE FEATURE FEATURE FEATURE FEATURE UPSTREAM BRANCH

EPAM Systems 45 SOURCE " HOOKS All Git hooks are ordinary scripts that Git executes when certain events occur in the repository. This makes them very easy to install and configure PRE-COMMIT PREPARE-COMMIT-MSG COMMIT-MSG POST-COMMIT POST-CHECKOUT PRE-REBASE PRE-RECEIVE UPDATE POST-RECEIVE Client Server http://githooks.com/ SPELLING ERRORS ENFORCE RULES EMAIL / SMS NOTIFICATIONS DEPLOY TRIGGER Use Cases 9GDJQQMUVQQ

EPAM Systems 46 SOURCE " COMMIT MESSAGES [FIX] Closes: #1234 [BREAKING] Interface of method has been changed… [COMPLETE] Feature (F16:Raptor) is ready for integration [ENV] Some minor refactoring MAKE YOUR CONVENTION ISSUE MANAGEMENT 1 2 3 RELEASE NOTES AND CHANGE LOGS 4 ANNOTATIONS: squash! fixup! ň+ņXGHKZGFVJCVʼn

CONTINUOUS INTEGRATION #

EPAM Systems 48 TECHNICAL DEPT TESTS WILL BE IN THE NEXT RELEASE LET’S JUST COPY/PASTE FOR NOW 1 2 3 CODE ENTROPY: “IF I TOUCH THAT CODE EVERYTHING WILL BREAK” 4 TODO/FIXME STATEMENTS CONTINUOUS INTEGRATION # Fix this code, the only one who can. Is in another company already. http://en.wikipedia.org/wiki/Technical_debt 5 DOCS? MY CODE IS STATE OF ART $WI&TKXGP&GXGNQROGPV

EPAM Systems 49 CODE QUALITY CODE-STYLE: TABS/SPACES, INDENTATION STATIC ANALYZE AND COMPLEXITY: BUGS, DUPLICATION, STANDARDS 1 2 3 UNIT-TESTS AND COVERAGE 4 DOCS AND COMMENTS AUTO M ATE CONTINUOUS INTEGRATION # 5 TECH BACKLOG .KUVQHVCUMU RTKQTKV[

EPAM Systems 50 CODE STYLE CONTINUOUS INTEGRATION # - JSHINT + STYLISH - PLATO - CODE PAINTER - EDITORCONFIG - JSCS - ESLINT - AIRBNB - CROCKFORD - GOOGLE - JQUERY - MDCS (THREE.JS) - WIKIMEDIA - YANDEX - COFFEELINT - CSS - HTML Other validations JSCS Presets 1 2 3 4 5 Tools READABILITY GOOD NAMES CLEAR LOGIC POTENTIAL ISSUES GUIDELINES

EPAM Systems 51 CONTINUOUS INTEGRATION TESTS # LONG (hours) MEDIUM (minutes) FAST (seconds) FEEDBACK TIME UNIT-TESTS UI API TDD (BDD) BETTER CODE UNDERSTANDING 1 2 3 RELIABILITY 4 RELEASE FASTER 5 MOTIVATION FILE SYSTEM DATABASE HEADLESS END-TO-END 5VWDU/QEMU .QECNQPN[ %CPDGTGOQVG 5CHGTTGHCEVQTKPI SERVICES 2GTHQTOCPEGOGVTKEU 4GF)TGGP4GHCEVQT (KTUVHCKNGF SMOKE TESTS

EPAM Systems 52 CONTINUOUS INTEGRATION FIXTURES # module.exports.Permission = login: name: 'login' title: 'Login Page' ! home: name: 'home' title: 'Home Page' ! student: name: 'student' title: 'Student Section' ! moderator: name: 'moderator' title: 'Admin Section' module.exports.Role = guest: name: 'Guest' permissions: [ Permissions.login Permissions.home ] ! user: name: 'User' permissions: [ Permissions.home Permissions.student ] ! admin: name: 'Admin' permissions: [ Permissions.home Permissions.student Permissions.moderator ] Permission.coffee Role.coffee db.Role Clean Role.coffee 6GUVKPI&$TGNCVGFNQIKE

EPAM Systems 53 CONTINUOUS INTEGRATION CODE COVERAGE # 97% NOT TESTED AREA OF APP DEAD CODE DETECTION 1 2 3 TESTING QUALITY 4 ACCEPTANCE THRESHOLD 70-90% 5 REPORTS JSCoverage Istanbul COVERALS.IO Blanket #9'51/' *KUVQT[CPFUVCVUUGTXKEG CODECLIMATE

EPAM Systems 54 CONTINUOUS INTEGRATION DOCUMENTATION GENERATION # KEEP THEM UP-TO-DATE METHODS AND CLASSES 1 2 3 PUBLIC API 4 USAGE EXAMPLES 5 (RE) USE YOUR TESTS HTML MARKDOWN JSDoc Output JSDOC* CROJSDOC APIDOCJS DOX MOX DOCCO CODO Tools @param @name @class @method @option @example @depricated @package @private @api ;17$7+.6+6 ;17470+6Ŏ *WOCPTGCFCDNGCPF )KV*WDHTKGPFN[

EPAM Systems 55 CONTINUOUS INTEGRATION .dot files # .gitignore .gitattributes .jshintrc .jshintignore .editorconfig .jscs.json .travis.yml SHAREABLE CONFIGURATION EASY TO MANAGE 1 2 3 IDE INTEGRATION 4 ESSENTIAL PART OF YOUR ENVIRONMENT 5 NOT A TRASH Invest time learning to configure your machine and automate processes Project System .bashrc .zshrc .gitconfig .aliases .functions .osx http://dotfiles.github.io/ 1P7PKZCNKMGU[UVGOU

EPAM Systems 56 CONTINUOUS INTEGRATION IDE # Code Completion and Inspection Refactoring, Metrics 1 2 3 Test framework integration 4 Debugger, Frameworks support 5 Source Version control Issue trackers integration CODIO CLOUD9 CODEBOX CODENVY Online IDE 9GD5VQTO

EPAM Systems 57 CI SERVERS CONTINUOUS INTEGRATION # BUILDS HISTORY AND VISIBILITY LAST GREEN/RED STATUS 1 2 3 PARALLEL BUILDS 4 MULTIPLE ENVIRONMENTS 5 ROLLBACK JENKINS TEAMCITY GRUNT CONCRETE STRIDER CI TOOLS &1+6;1745'.( And badges: http://shields.io/

EPAM Systems 58 HOSTED SERVICES CONTINUOUS INTEGRATION # CI AS A SERVICE INTEGRATED WITH GITHUB AND BITBUCKET 1 2 3 BUILD ON SCHEDULE 4 DEPLOY GREEN 5 REPORTS AND STATUS DASHBOARD circle.yml .travis.yml Options TRAVIS CI CODESHIP CIRCLE CI BAMBOO MAGNUM CI SEMAPHORE GONDOR RULTOR Services [ON

" DEPLOY PLATFORMS

EPAM Systems 60 DEPLOY PLATFORMS SERVER # CUSTOMIZABLE STACK AND ENVIRONMENT NEED FOR (DEV) OPS DATA: COMPANY POLICY OWN SERVICES TO USE d e f g g / NGINX APACHE TOMCAT Ñ SSH BASH 7SYSLOG # FILES TMP CACHE $ SQL NOSQL KEY:VAL (SERVICES DAEMONS CRON W IPTABLES mSENDMAIL w .QQMUIQQF CHVGTC[GCTQTVYQ 1 2 3 4 5 INFRASTRUCTURE +CC5#/#<10&+)+6#.1%'#0 QT4#%-52#%' K

EPAM Systems % 61 DEPLOY PLATFORMS PaaS # CLI DEPLOYS CONFIGURATION DASHBOARD 1 2 3 BUILDING BLOCKS (DISK SPACE, DB, MONITORING, ADDONS) 4 MONITORING 5 SLA AND NODES MANAGEMENT NODEJITSU HEROKU CLOUD FOUNDRY JOYENT ENGINE YARD Services #NN[QWPGGFVQTWP[QWTCRR 7RFCVGU5GEWTKV[Ŏ

EPAM Systems 62 DEPLOY PLATFORMS Docker # YOUR OWN PAAS OPEN SOURCE 1 2 3 EASY SCALE 4 MANY READY TO USE STACKS 5 EASY TO MIGRATE DEIS FLYNN TSURU OCTOHOST ! TOOLS 1RGP5QWTEG2CC5 YKVJ$NCEMLCEM #RRNKECVKQP 2NCVHQTO%QPVCKPGT

7 MONITORING EVENTS
 METRICS

EPAM Systems 64 MONITORING EVENTS Logs management # FORMAT IS IMPORTANT AGGREGATION AND ROTATION 1 2 3 SEARCH 4 ALERTS AND NOTIFICATIONS 5 WATCHERS ITGRCEMUQTVQTŎ ŎWUGNQIUVCUJ

EPAM Systems 65 MONITORING EVENTS Example # &CVG .GXGN 2014/10/02 13:58:32 [error] 925#0: *14 connect() failed (111: Connection refused) while… 'XGPV SIZE DATE 10Mb LOGS Sept 10Mb Oct 07

EPAM Systems 66 MONITORING EVENTS Logging services # PAPERTAIL LOGENTRIES SUMOLOGIC BOUNDARY SENTRY GRAYLOG2 Services &QKV[QWTUGNH APP DB SRV SYS % ELASTIC SEARCH n 8 ! 5QNWVKQPU &CVCUQWTEGU

EPAM Systems 67 MONITORING Errors # CONTEXT IS IMPORTANT GROUPING REPRODUCE FAIL GRACEFULLY HISTORY … RAYGUN TRACKJS AIRBRAKE QBAKA MUSCULA JSERRLOG TRACEKIT Services 1 2 3 4 5 5VCEMVTCEGQT)6(1 &GHGEVKPRTQFWEVKQP! 9QTMUQPO[OCEJKPG &QKV[QWTUGNH

EPAM Systems 68 MONITORING METRICS Health Page # SERVICE #1 (UP) Ã SERVICE #3 (10k users / s) Ã SERVICE #1 (10k ops / s) Ã Â FREE SPACE (~2Gb) ;QWDGVVGTFQUQOGVJKPIYKVJKV HARDWARE SERVICES AND API 1 2 3 TRANSPORTS 4 PERFORMANCE 5 UPTIME

& SUMMARY

70 SUMMARY EPAM Systems & DEVELOPMENT WORKFLOW SOURCE MANAGEMENT DEPLOY PLATFORMS MONITORING METRICS Automate Tests Small features BUILD PIPELINE CONTINUOUS INTEGRATION ' " ! " 7 # +VņUGCU[KVUVCTV

71 SUMMARY EPAM Systems & DEVELOPMENT WORKFLOW SOURCE MANAGEMENT DEPLOY PLATFORMS MONITORING METRICS Automate Tests Small features Code style Commits convention 12 factor app BUILD PIPELINE CONTINUOUS INTEGRATION ' " ! " 7 # +VņUHTGGHQT[QWTVGCO

72 SUMMARY EPAM Systems & DEVELOPMENT WORKFLOW SOURCE MANAGEMENT DEPLOY PLATFORMS MONITORING METRICS Automate Tests Small features Code style Commits convention 12 factor app Build Blocks Keep it fast Run cycles BUILD PIPELINE CONTINUOUS INTEGRATION ' " ! " 7 # &QYPNQCFCPFKPVGITCVG

73 SUMMARY EPAM Systems & DEVELOPMENT WORKFLOW SOURCE MANAGEMENT DEPLOY PLATFORMS MONITORING METRICS Automate Tests Small features Code style Commits convention 12 factor app Build Blocks Keep it fast Run cycles Fail early Fast feedback Step by Step BUILD PIPELINE CONTINUOUS INTEGRATION ' " ! " 7 # 1PGUOCNNUVGRHQT[QW IKCPVNGCRHQT[QWT2TQLGEV

74 SUMMARY EPAM Systems & DEVELOPMENT WORKFLOW SOURCE MANAGEMENT DEPLOY PLATFORMS MONITORING METRICS Automate Tests Small features Code style Commits convention 12 factor app Build Blocks Keep it fast Run cycles Fail early Fast feedback Step by Step BUILD PIPELINE CONTINUOUS INTEGRATION DevOps Production alike …as a Service ' " ! " 7 # +PVTQFWEGKV[QWTUGNH

75 SUMMARY EPAM Systems & DEVELOPMENT WORKFLOW SOURCE MANAGEMENT DEPLOY PLATFORMS MONITORING METRICS Automate Tests Small features Code style Commits convention 12 factor app Build Blocks Keep it fast Run cycles Fail early Fast feedback Step by Step BUILD PIPELINE CONTINUOUS INTEGRATION DevOps Production alike …as a Service Metrics Checklist ' " ! " 7 # Logs rotation 5GG#EV2TGXGPV

76 SUMMARY EPAM Systems & DEVELOPMENT WORKFLOW SOURCE MANAGEMENT DEPLOY PLATFORMS MONITORING METRICS Automate Tests Small features Code style Commits convention 12 factor app Build Blocks Keep it fast Run cycles Fail early Fast feedback Step by Step BUILD PIPELINE CONTINUOUS INTEGRATION DevOps Production alike …as a Service Metrics Checklist ' " ! " 7 # Logs rotation 6T[KVVQFC[

77 EPAM Systems QUESTIONS? ? THANKS!