The killer feature isn't the language; it's the virtual machine abstraction, which lets us stop thinking about the underlying infrastructure and therefore build

The killer feature isn't the language; it's the virtual machine abstraction, which lets us stop thinking about the underlying infrastructure and therefore build stuff faster and have simple performance/observability/cost metrics (because the application logic is fully and formally described, rather than spread across many services/infrastructure). Does that explanation make sense? From a dev point of view, it's this: The ability to take business-logic "units" in Python, and quickly connect them into larger programs/workflows that run on Lambda. So the language features aren't particularly interesting - it's not meant to replace Python. But it can do things that are hard/awkward using just Python.