Interestingly, S3 and DynamoDB access from privately addressed IPv4 VPCs is free, since it's implemented as routes not endpoints, and although rather constraini

Interestingly, S3 and DynamoDB access from privately addressed IPv4 VPCs is free, since it's implemented as routes not endpoints, and although rather constraining you can definitely build things with that. Case in point, I had some internal instances that very occasionally want to pull files from a partner's endpoint. Previous solution, NAT gateway. New solution, DynamoDB request table streamed to AWS Lambda and results in S3. Caveat programmer: only suitable if the task is not latency sensitive. DynamoDB/Lambda are not everyone's cup of tea, but it's nice to have options.