> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/feature-management-experimentation/new-to-fme/sdks-and-customer-deployed-components/server-side-sdks.md). # Server-side SDKs ### Overview Harness FME provides server-side SDKs that let you evaluate feature flags, run experiments, and control rollouts from your backend services. These SDKs are designed for high-throughput, low-latency environments where feature logic must run securely and reliably without exposing rules or targeting logic to the client. By integrating a server-side SDK, you can: * Evaluate targeting rules securely on the server * Maintain consistent behavior across multiple environments * Implement feature rollouts without redeploying backend code * Collect event data for experiment analysis ### Get started Select a backend language or framework to begin.
Elixir Thin Client SDK/pages/aCR1qteofOk23blhGAC4
Go SDK/pages/9S5EdLJQSGskpM0SkLxH
Java SDK/pages/uwrbv211wAgmTIdyenQD
.NET SDK/pages/AogFQGSeilYEy4E1M6nj
NodeJS SDK/pages/Ffpw4KXywnonGdBt79yQ
PHP SDK/pages/VECjaZVbNH17j4LpfoZZ
PHP Thin Client SDK/pages/Iv28tuwRX9swh3cpgarB
Python SDKPython SDK/pages/sLjI7D2F7J7Fvg1ZKE9g
Ruby SDKRuby SDK/pages/ZRyRRi2ra4rGRlie7iRQ