https://aws.amazon.com/step-functions

2023
https://dev.to/slsbytheodo/learn-serverless-on-aws-step-by-step-strong-types-213i
2022
https://dev.to/skabba/mastering-local-aws-lambda-development-18mg
    using sam
https://dzone.com/articles/an-introduction-to-aws-step-functions