Lambda logs to CloudWatch automatically — but keeps every log line forever unless you tell it otherwise.
Every Lambda invocation writes to CloudWatch Logs automatically — you don't opt in, and by default you don't opt out either. Left alone, those logs accumulate forever. For a function you call constantly, "forever" is a real storage bill, not a hypothetical one.
Locked
This exercise builds on Creating a function — run synth & validate there until every assertion passes, then this code will unlock.
Go to Creating a function