--- title: "Inside Google’s System for Coordinated A/B Testing Across Its Global Service Fleet" url: https://daily.dev/posts/inside-google-s-system-for-coordinated-a-b-testing-across-its-global-service-fleet-dcjl4coz4 source_url: https://www.infoq.com/news/2026/06/google-fleet-ab-experimentation type: article source: "InfoQ" published: 2026-06-03T15:02:46.575Z updated: 2026-06-03T15:03:07.638Z tags: ["google", "distributed-systems", "ab-testing"] reading_time: 3 upvotes: 0 comments: 0 language: 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. # Inside Google’s System for Coordinated A/B Testing Across Its Global Service Fleet **[InfoQ](https://daily.dev/sources/infoq)** · 3 min read · 0 upvotes · 0 comments ## Summary Google has published details of its internal fleet-wide A/B experimentation system, designed to standardize experiment assignment, exposure logging, and configuration propagation across its distributed service infrastructure. The system uses a centralized framework with a unified assignment layer that supports hierarchical traffic allocation, reducing conflicts between overlapping experiments. Deterministic user bucketing ensures stable exposure over time, while exposure logging distinguishes assigned from truly exposed populations for more reliable metric analysis. Experiment configurations are distributed locally to serving systems to minimize runtime latency. Analytics pipelines aggregate results across services, enabling end-to-end impact measurement and faster product iteration at scale. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Large scale A/B experimentation on data center infrastructure](https://daily.dev/posts/large-scale-a-b-experimentation-on-data-center-infrastructure-kasi9labf) · Google Cloud · 0 upvotes · 0 comments - [A/B test models in production](https://daily.dev/posts/a-b-test-models-in-production-w0dbvgkzs) · Together AI · 0 upvotes · 0 comments - [Measure the business impact of every product change with Datadog Experiments](https://daily.dev/posts/measure-the-business-impact-of-every-product-change-with-datadog-experiments-ls3zdav77) · Datadog · 0 upvotes · 0 comments --- Tags: [#google](https://daily.dev/tags/google), [#distributed-systems](https://daily.dev/tags/distributed-systems), [#ab-testing](https://daily.dev/tags/ab-testing) [View this post on daily.dev](https://daily.dev/posts/inside-google-s-system-for-coordinated-a-b-testing-across-its-global-service-fleet-dcjl4coz4)