https://www.jeremydaly.com/serverless-microservice-patterns-for-aws/
https://medium.com/totalcloudio/aws-dynamodb-for-serverless-microservices-2acbbbff1bca
https://medium.com/@eduardoromero/serverless-architectural-patterns-261d8743020
http://aws-de-media.s3.amazonaws.com/images/DevDays%202018/SER3-Serverless%20Architectural%20Patterns.pdf
Most common architectures I've used:
The Aggregator
The Robust API
The Circuit breaker
Continuous stream processor