expo-eas-update-expert

Staged rollouts in EAS Update use channels and percentage-based configurations in eas.json to gradually deploy updates. Define a channel, set a rollout percentage, and publish your update—EAS progressively distributes it to the specified client percentage, reducing risk of widespread issues.

Channels target specific user groups and control which updates clients receive; branches organize your update history and publishing workflow. Use channels for production rollout strategies (e.g., 'staging', 'production') and branches to manage parallel development and release lines.

Rollback in EAS Update involves republishing a previous update to the affected channel or creating a new update that reverts problematic changes. Point your channel to an earlier update hash or publish a hotfix, then monitor adoption to confirm clients receive the corrected version.

Yes, runtime version compatibility policies in EAS Update determine whether clients will accept an update. Mismatched runtime versions prevent installation; configure runtime-version policies in eas.json to ensure only compatible clients receive updates and avoid deployment failures.

Yes, canary deployments with EAS Update combine channels and percentage-based rollouts to test updates with a small user subset first. Deploy to a canary channel at low percentage, monitor stability, then expand percentage or switch to production channel once validated.

EAS Update requires app.json (or app.config.js) for app metadata and eas.json for update configuration including channels, branches, and rollout strategies. Both files define how updates are published, distributed, and which clients receive them based on runtime version and deployment settings.