The article is so obfuscated it's hard to know what they're actually selling. My guess is that it's something similar to Cloudflare Workers + WebAssembly (https://blog.cloudflare.com/webassembly-on-cloudflare-worker...), meaning a serverless function. In Cloudflare's case, the main worker itself works in JS, but can import WASM modules.

In Fermyon's case, you can compile directly to WASM, skip the JS layer, and the framework will set you up with HTTP endpoints to handle requests. Why WASM? It's faster, and lets you transpile from other common backend languages so you don't have to write JS, I guess.

So like they containerize WASM for you into serverless functions that you don't have to micromanage yourself. Send it some data-intensive task and get back some data. Like a remote procedure call, almost?

Or at least that is my GUESS. No idea if any of that's right... the article and website aren't clear at all.