- Learning DynamoDB: https://aws.amazon.com/dynamodb/getting-started/
- DynamoDB design: https://aws.amazon.com/blogs/database/choosing-the-right-dynamodb-partition-key/
- Step Functions tutorial: https://docs.aws.amazon.com/step-functions/latest/dg/getting-started.html
- Step Functions Local, configuration options: https://docs.aws.amazon.com/step-functions/latest/dg/sfn-local-config-options.html