[mdaniel]

FWIW, Lambda takes the opposite of your assertion: there are function entrypoints and the HTTP or gRPC or Stdin is an implementation detail; one can see that in practice via the golang lambda "bootstrap" shim <https://pkg.go.dev/github.com/aws/aws-lambda-go@v1.49.0/lamb...> which is invoked by the Runtime Interface Emulator <https://github.com/aws/aws-lambda-runtime-interface-emulator...>

I don't have the links to Azure's or GCP's function emulation framework, but my recollection is that they behave similarly, for similar reasons

[conradev]

Oh yes! I was thinking about the V8 isolate flavor of stateless functions (Cloudflare, Fastly, etc). I had forgotten about the containerized Linux microVM stateless functions (Lambda, Cloud Run, etc). They have everything, and my favorite use is https://github.com/stanfordsnr/gg

Funnily, enough, the V8 isolates support stdio via WASM now