What are the key whitepaper(s) recommended for studying this exam?

https://aws.amazon.com/security/security-resources/

AWS Cloud Security and Cloud Compliance Resources (aws.amazon.com/whitepapers)

• Security and Compliance documentation

• Compliance resources

These are the official documents. But try to read all on https://aws.amazon.com/security/security-resources/

The whitepaper on KMS implementation is also a good read, https://d1.awsstatic.com/whitepapers/KMS-Cryptographic-Details.pdf

I mentioned in another post that the current course is missing or glossing over some of the topics I expect to be core knowledge. In addition to whitepapers, I’d do some reading on the AWS Security Blog and watching re:Invent videos from this past year. Topics to look out for:

• Intermediate/Advanced IAM policies

• Envelope Encryption & KMS + AWS Encryption SDK

• Making use of Encryption Context for KMS!!!

• Multi-Account Architecture & AWS Organizations

• Automating Security Management / Operations