I think the 'light' workload is the most realistic - most people use lambda as a stateless CRUD backend/REST endpoint, I don't think doing heavy number crunching is that idiomatic inside a lambda.

And for that use case, Python seems almost as good as Rust, which is surprising to me, as is the fact that Node runs so slow - I have a ton of Node-based lambdas in prod, and while they're no speed demons, I'm quite surprised how bad it is compared to even interpreted things like Python.

AWS should really look into this and fix it, or at least tell us why it's so slow.