[falcolas]

I don't have exact numbers, but we have dozens of lambda functions written in Python which are parsing and acting on Kinesis log streams (at volumes that cause problems for the Splunk ingest), and regularly hit the 100 process concurrency limit... but our bill is well under $10 a year (yes, year, not month. Hence my use of the adjectives "ridiculously" and "stupidly").

Luck? Hidden discounts? Don't know. Just know that our bill is ridiculously low for everything we're doing.