seamlessly scales capacity

Application connects via RouterFleet.

ACUs (Aurora Capacity Units) are each 2GB of memory.

Aurora serverless is configured with a single connection endpoint, (you don't have an endpoint for writes and replicas endpoints for reads, since it is serverless and scales automatically)

It is the perfect choice in case of

infrequently used applications

new applications where usage is - not know yet or predictable

very variable workloads