[20thr]

100% -- EC2's general purpose nature is not in my opinion the best fit for ephemeral use-cases. You'll be constantly fighting the infrastructure as the set of trade-offs and design goals are widely different.

This is why CodeSandbox, Namespace, and even fly.io built special-purpose architectures to guarantee extremely start-up time.

In the case of Namespace it's ~2sec on cold boots with a set of user-supplied containers, with storage allocations.

(Disclaimer, I'm with Namespace -- https://namespace.so)