Lambda Provisioned Concurrency AutoScaling is Awesome. Make sure you understand how it works!
A quick intro to Provisioned Concurrency
At re:Invent 2019, AWS added a flavor of AWS Lambda that lets you pre-provision Lambda capacity ahead of time — its called Provisioned Concurrency (PC). You tell AWS how much concurrency you want to keep warm and AWS will handle everything for you. This lets you execute Lambda functions with super low latency and no cold starts.