Feature Experimentation docs

Feature Experimentation API

Release Notes for Feature Experimentation

2026 Optimizely Feature Experimentation release notes

2025 Optimizely Feature Experimentation release notes

2024 Optimizely Feature Experimentation release notes

2023 Optimizely Feature Experimentation release notes

2022 Optimizely Feature Experimentation release notes

Feature Experimentation SDK release notes

Feature Experimentation API changelog – 2025

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Release notes

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JavaScript SDK

Javascript-SDK - 0.1.0

0 min

- Beta release of the Javascript SDK for our Optimizely testing solution

https://github.com/optimizely/javascript-sdk/releases/tag/v0.1.0

Updated 28 Aug 2026

Javascript-SDK - 0.1.1

PHP-SDK - 4.0.3

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