Deploy & manage serverless Wasm apps

Run cloud applications and functions quickly and efficiently with Fermyon Cloud

Log into Fermyon Cloud to view and manage your WebAssembly apps, configure domains, check on logs, and see status - free to use!

Cloud makes the most of WebAssembly’s speed, security, and cross-platform support

Developers can deploy applications and instantly have a secure, publicly available deployment. With the dashboard, see what’s running, examine the logs, and monitor your application over time.

Build your app

With Fermyon Spin, you can create, build, and locally test your app in just three commands.

Build your app with Spin. With Fermyon Spin, you can create, build, and locally test your app in just three commands.

Deploy to the cloud

Ready to see your application live? Deploy it to Fermyon Cloud and you'll get a publicly available deployment. All you need is a GitHub account.

Ready to see your application live? Deploy it to Fermyon Cloud and you'll get a publicly available deployment. All you need is a GitHub account.

Check app and logs in the portal

Log into the Fermyon Dashboard to view all your apps, check on logs, and see status. It's all free!

Log into Fermyon Cloud to view and manage your WebAssembly apps, configure domains, check on logs, and see status - free to use!

Production-Ready

New Serverless AI
Serverless AI  

Execute inferencing for LLMs directly from serverless apps.

Custom Domains
Custom Domains

Add & manage your own domains to serve traffic to your apps.

SQL Database
SQLite Database

Easily add a SQLite database to your Spin app - no Ops required.

Key/Value Store
Key/Value Store

Quickly persist data in your apps with Spin's in-built local KV store.

GitHub Actions
GitHub Actions

Easily connect CI/CD tasks and webhook events to Wasm apps.

Variables & Secrets
Variables & Secrets

Rotate secrets, update endpoints and more through the API.

Next-generation Technology

No Cold Starts
No Cold Starts

Experience micro-second cold-start times, meaning quicker, seamless execution.

Scales to Zero
Scales to Zero

Wasm modules only run during a request - starting, executing, and shutting down in milliseconds.

Serverless
Serverless

Fermyon Cloud’s architecture reduces friction, freeing developers from operational concerns.

Powered by WebAssembly

Wasm logo
WebAssembly

Run event-driven Wasm services and web applications

Secure by Default
Secure by Default

Ensure clear separation of services with sandboxing.

Open Source
Open Source

Open Source code written by long-time OSS contributors.

Why Fermyon?

The next wave of cloud compute looks like this

Architected to compile and ship your code as Wasm binaries, Fermyon is a lighter, faster and truly serverless cloud. No need to deal with images, OS layers or instance config.

Finally the promise of true sustainable serverless cloud computing is here with Fermyon’s Cloud offering — a platform that allows me to use almost any language, is incredibly easy to use and blazingly fast.”

Federico Dionisi

typical app image
200MB+
app.wasm
3.2MB

Hello
supersonic.

Goodbye
cold starts.

0ms 50ms 100ms 150ms 200ms 250ms
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Automatically scales-to-zero

Requests are so fast, services can shut back down seamlessly between requests — minimizing compute consumption.

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Secure by
default

Every Wasm application runs in a secure sandbox — eliminating cross contamination.

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Compute less, save more

A lighter, faster, and more efficient model means lower cost and more sustainable for your business and our planet.

We've got you covered.

Not just JavaScript — compile almost any language to Wasm.

Rust, Go, Python, JavaScript, .NET, Ruby, C#

Fermyon’s Spin works with mainstream languages like JS/TS, Python, .NET, Rust, and Go. We adhere to the WASI standard, which means dozens of languages that have support for Wasm can be compiled, built and deployed.

Deploy and run for free

No tricks. You can run apps on Fermyon Cloud without having to worry about an expiration date. You can opt into future, paid upgrades later on if you need to.