Cloudflare Workers is really a Chromium "browser service worker" that runs on their servers. Since Chromium makes each browser tab isolated as possible, each i

Cloudflare Workers is really a Chromium "browser service worker" that runs on their servers. Since Chromium makes each browser tab isolated as possible, each instance does indeed act as a mini-VM, & AFAIK usually is created/destroyed per HTTP request. Most deployed code uses JavaScript/TypeScript, but also can run WebAssembly, which is how they got COBOL to run there. I've also seen RUST, GoLang, & other sources run on Cloudflare Workers. Shameless self-plug here: https://github.com/tomByrer/awesome-cloudflare-workers https://github.com/tomByrer/awesome-cloudflare-workers