Introducing Spin

Spin is a framework for building and running event-driven microservice applications with WebAssembly (Wasm) components.

Spin uses Wasm because it is sandboxed, portable, and fast. Millisecond cold start times mean no need to keep applications “warm”.

Many languages have Wasm implementations, so developers don’t have to learn new languages or libraries.

Spin is open source, under the aegis of the CNCF, and built on standards, meaning you can take your Spin applications anywhere. There are Spin implementations for local development, for self-hosted servers, for Kubernetes, and for cloud-hosted services.

Want to see the kinds of things people are building with Spin? Check out what’s Built With Spin!

Or dive into the documentation and get started:

• Quick Start:
• Learn how to write Spin applications