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How to Set Feature Flag Rules in Amplitude

Updated on:
June 5, 2026
By:
Madhav Bhandari
Use this interactive demo to learn how to configure and enable feature flag rules in Amplitude Experiment.

Quick summary

Setting feature flag rules in Amplitude Experiment lets you control which users or devices receive a feature by defining targeting conditions, rollout percentages, and variants. This guide walks through the full configuration process — from the Testing section to saving your final rule settings.


Steps

  1. Navigate to the Testing section, tap the User/Device IDs and Cohorts tab, then select the targeting value you want to use.
  2. Scroll down to the Assignment section, select your preferred user type, and set the desired rollout percentage.
  3. Under the Settings section, adjust additional options such as links, tags, deployments, and variants as needed.
  4. Click Save in the top-right corner to apply and enable the feature flag rules based on your configuration.

📌 Why this matters

Feature flag rules in Amplitude Experiment give product and engineering teams precise control over who sees a new feature, enabling safe, targeted rollouts without full deployments. By configuring targeting conditions — such as user IDs, cohorts, and rollout percentages — teams can run controlled experiments, reduce release risk, and iterate faster. Amplitude's experiment configuration interface centralizes variant management, deployment linking, and audience segmentation in one place, making feature flagging accessible to both technical and non-technical stakeholders. This level of control is essential for teams practicing continuous delivery and data-driven feature releases.
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