For a serverless system that uses Lambda together with eg CloudFormation, Dynamo, and S3, Cognito etc - it's pretty low level and you spend a lot of time unders

For a serverless system that uses Lambda together with eg CloudFormation, Dynamo, and S3, Cognito etc - it's pretty low level and you spend a lot of time understanding, refining & debugging basic things. The end-to-end logging and instrumentation throughout the services used by your app weren't great. Doesn't like big app binaries/JARs and Amazon's API client libs are bloated - Clojure + Amazonica goes easily over the limit if you don't manually exclude some Amazon's API JDKs from the package. On the plus side, you can test all the APIs from your dev box using the cli or boto3 before doing it from the lambda. Would probably look into third party things like Serverless next time.