--- title: Real Life A/B Testing With Universal Analytics | daily.dev description: A practical guide to implementing A/B testing on a real product using Google Universal Analytics instead of off-the-shelf tools. Covers the full workflow:... canonical: https://daily.dev/posts/real-life-a-b-testing-with-universal-analytics-xz8sulbxz twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Real Life A/B Testing With Universal Analytics | daily.dev og:description: A practical guide to implementing A/B testing on a real product using Google Universal Analytics instead of off-the-shelf tools. Covers the full workflow:... og:url: https://daily.dev/posts/real-life-a-b-testing-with-universal-analytics-xz8sulbxz og:image: https://api.daily.dev/og/posts/Xz8SuLbxz.png og:image:alt: Real Life A/B Testing With Universal Analytics og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Real Life A/B Testing With Universal Analytics **[Marc G Gauthier](https://daily.dev/sources/marcgg)** · 9 min read · 0 upvotes · 0 comments ## Summary A practical guide to implementing A/B testing on a real product using Google Universal Analytics instead of off-the-shelf tools. Covers the full workflow: defining KPIs and conversion funnels, flagging users with random assignment stored in cookies or persistent storage, sending experiment data as custom dimensions to Universal Analytics, segmenting results, and closing experiments cleanly. Key warnings include not testing without sufficient traffic, not measuring shallow metrics like button clicks, and validating the system with A/A tests. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#ruby](https://daily.dev/tags/ruby), [#google-analytics](https://daily.dev/tags/google-analytics), [#ab-testing](https://daily.dev/tags/ab-testing) [View this post on daily.dev](https://daily.dev/posts/real-life-a-b-testing-with-universal-analytics-xz8sulbxz) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Real Life A/B Testing With Universal Analytics","url":"https://daily.dev/posts/real-life-a-b-testing-with-universal-analytics-xz8sulbxz","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/real-life-a-b-testing-with-universal-analytics-xz8sulbxz"},"datePublished":"2026-03-26T08:36:05.039Z","dateModified":"2026-03-26T08:37:40.298Z","description":"A practical guide to implementing A/B testing on a real product using Google Universal Analytics instead of off-the-shelf tools. Covers the full workflow:...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/35abdab355460ebc3a48f1af43fb4df6?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/35abdab355460ebc3a48f1af43fb4df6?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Marc G Gauthier","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Marc G Gauthier","logo":"https://media.daily.dev/image/upload/s--P4lsZKFE--/f_auto,q_auto/v1774514113/logos/marcgg?_a=BAMAMiWQ0","url":"https://daily.dev/sources/marcgg"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/real-life-a-b-testing-with-universal-analytics-xz8sulbxz","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"ruby,google-analytics,ab-testing","timeRequired":"PT9M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Marc G Gauthier","item":"https://daily.dev/sources/marcgg"},{"@type":"ListItem","position":3,"name":"Real Life A/B Testing With Universal Analytics"}]} ```