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- Kill switches: turn a feature off without a deploy
- Percentage rollouts and rule-based targeting by user attribute or segment
- A/B testing with multi-variation flags
- Sub-millisecond evaluation. Server SDKs evaluate in-process and keep serving if we go down
- 13 SDKs: JavaScript, Node, Python, .NET, Java, Go, PHP, Ruby, React, Browser, Swift, Flutter, Android
- REST Management API, Terraform provider, MCP server and OpenFeature on every plan