# H3 (HTTP server) > Tiny and fast HTTP server Tiny and fast HTTP server > H3 (short for H(TTP), pronounced as /eɪtʃθriː/, like h-3) is a lightweight, fast, and composable server framework for modern [JavaScript](https://wiki.g15e.com/pages/JavaScript.txt) runtimes. It is based on web standard primitives such as Request, Response, URL, and Headers. You can integrate H3 with any compatible runtime or mount other web-compatible handlers to H3 with almost no added latency. https://h3.dev/