[soren1]

My experience has been the opposite, with simple python docker containers showing noticeably slower cold starts than python zips. I've also found the size of the zip package matters (smaller is faster). However things change over time, maybe there have been recent improvements?

Specifically regarding cold starts of lambda instances, I recall this excellent article from Jan 2021 which measures cold start latencies for a variety of AWS lambda runtimes:

https://mikhail.io/serverless/coldstarts/aws/languages/

I would love to see a 2022 update.

[squeaky-clean]

Our benchmarking was only for a to a warmed lambda, I don't believe any language can do a 50ms cold start on lambda. The fastest example in your link is python with around 150ms cold start as the fastest, and that's an outlier from the average.