AWS Lambda Power Tuning is an open-source tool that can help you visualize and fine-tune the memory/power configuration of Lambda functions. It runs in your own AWS account - powered by AWS Step Functions - and it supports three optimization strategies: cost, speed, and balanced.
I'm going to define a few custom Cfn stacks to cover the major deployment parameters:
Additionally, I'll create custom tests to make sure the deployed resources behave as intended (WIP, this might take a while).