This article covers the issue of automating product decisions from A/B tests, trying to knit together what have pretty much been disparate and sometimes even ad hoc stages of experimentation into a single, reproducible, scalable pipeline that includes hypothesis planning, traffic control, streaming analytics, statistical evaluation, and safe rollout. The growth of this inquiry is motivated by the rapid increase in numbers of digital experiments and correspondingly strong demand for A/B testing tools--and the tremendous weakness of traditional manual processes: more than 90% of spreadsheets have errors and one typo in Excel can cost billions undermining the product teams' confidence in the experimental results. The novelty of the work lies in a comprehensive analysis of modern experiment factory architectures that integrate feature flags, Apache Kafka–based streaming analytics, frequentist and Bayesian evaluation methods, multi-armed bandit algorithms, reinforcement learning, and elements of causal ML. A six-layer pipeline concept was proposed in which each stage (from the hypothesis catalog to automatic rollback and result archiving) is implemented by automated means without analyst involvement. Results show that automated A/B processes shrink the experiment cycle from weeks to hours, allow for parallel launch of hundreds of tests, reduce error risk, and speed delivery of winning variants to production. Sequential analysis keeps the false-positive rate under control below 5% along with false discovery rate control; Bayesian modes provide for proper decisions in small samples; and multi-armed bandits plus reinforcement learning virtually eliminate traffic loss during simultaneous exploration and exploitation. The automated system increases the frequency of releases, further improves conversions, and helps improve data-driven culture within organizations. The paper will be helpful to product managers, data analysts, DevOps engineers, and CTOs who are responsible for building and scaling an experimentation platform and establishing a seamless cycle of product decision-making.

A/B testing, experiment automation, streaming analytics, feature flags

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