Faasta – A self-hosted Serverless platform for WASM-wasi-HTTP in Rust

In plain words

Faasta is a self-hosted serverless platform built in Rust that runs WebAssembly functions using WASI-HTTP standards. Designed for developers wanting to deploy functions efficiently, it allows a single process to handle thousands of concurrent function invocations asynchronously, rather than requiring separate virtual machines. The platform supports multi-tenant deployments and is available as an open-source project with a command-line utility for local testing and deployment.

written from the facts on this page · September 2026

From the sources

A faster FaaS platform. Contribute to fourlexboehm/faasta development by creating an account on GitHub.

Faasta is a Function-as-a-Service platform for Rust functions compiled as WASI HTTP components. use faasta :: http :: Html ; # [ faasta :: handler ] async fn handle ( ) -> faasta :: Result < Html < String > > { Ok ( Html ( "<h1>Hello from Faasta</h1>" . to_string ( ) ) ) } Workflow cargo faasta new my-function cd my-function cargo faasta build cargo faasta deploy cargo faasta build wraps the WASIp3 component build so application projects do not need to know the Rust target or artifact layout. For self-hosting and storage configuration, see server/README.md and server/infra/capabilities.mdfrom github.com

In the maker’s words, at launch

I've just released an early version off my project I've been working on for a few months now and would love some feedback. https:&#x2F;&#x2F;github.com&#x2F;fourlexboehm&#x2F;faasta I was surprised there isn't yet an open&#x2F;source and standards compliant way to host wasi-http functions in a way that takes…

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