I'm working on a lambda with AWS account A, and I need to access an S3 bucket under AWS account B, which is not managed by a CDK.
Lambda (A) -> S3 Bucket (B)
I know that I can log into B's account and manually add bucket policies to the S3 bucket to allow account A's access.
But how could I use Account A's CDK to automate this process, assuming that the S3 bucket under Account B isn't managed by any CDK.