Given the absolutely massive and technical amount of features that aws requires, it's not surprising (or even worthy of condemnation) that the interface can get somewhat convoluted. That said, I wonder if there is a stripped down version of that interface that would better accommodate a hypothetical cohort of extremely common use cases. I would bet there isnt, which is why the interface is so.... Deep.

There's a way to pin sections to the nav bar. So you can pin EC2, IAM, RDS, and VPC up there if you mainly use those 4 services.

It's a bit of a nightmare, as a support engineer, to get access requests for AWS services you've never heard of before. "Need access to AWS services: Cloud9, Memento, Athena, and Pandora Nexus." Each having a completely unique set of granular permissions to fumble over means most users get full permissions to the requested service until the auditors complain.

Not exactly what you describe but Amazon does have Lightsail for this purpose.

https://aws.amazon.com/lightsail/