[algorithmmonkey]

What is the common spec for Knative? It seems like one runs an app as normal in a container and then the special scaling sauce is handled by Knative.

When I think of a portable spec for serverless, I think of something more like a Trait of an Interface that needs to be implemented, less a app hosting model. If you think about it like that, then Web Assembly component model [1] would be a great fit for defining an interface that could be implemented in a variety of languages.

[1]: https://github.com/WebAssembly/component-model/blob/main/des...

[adam_arthur]

Yes, exactly. Of course experimentation and competition is good to settle on a solid set of building blocks, but in the long run serverless code should absolutely be portable between vendors.

There's a strong incentive for vendors to not allow this as it reduces their pricing power... But think we will see it eventually one way or another.

[spankalee]

That would only be implementable by languages with a WASM output target though. Knative says that any container that responds to HTTP will work, and you could host those in different environments. It's much more general.