[tolidano]

Depending on the language you're using, one thing that works is: 1) use a framework to handle the nitty gritty (like Serverless, Zappa, or similar) 2) definitely use "devDependencies": { "serverless-python-requirements": "^4.3.0" } for python 3) don't be afraid to use Serverless 1.84 instead of 2.xx 4) I use pipenv (but poetry is probably fine too) and these: black = "" ipython = "" mypy = "" moto = "" pytest = "" pytest-cov = "" python-lambda-local = "*" The last one lets me drop this in my Makefile: try: pipenv run python-lambda-local -t 60 -f identify handler.py event.json event.json is a recorded event (or a carefully crafted one)