I wonder what effect this may have for AWS Lambdas connecting to a DB for synchronous calls (e.g. through API gateway). The biggest issue with Lambdas IMO is the cold start time. If your Lambda is in a VPC the cold start time is around 8-10 seconds, and if you have decent security practices your database will be in a VPC. I know AWS said they would be working on improving Lambda VPC cold start times, but would like to know if using Aurora Serverless with these kind of "connectionless connections" would also get rid of the need to be in a VPC. I've used Aurora (and really, really liked it) but I haven't used Aurora Serverless.