One of the benefits of the cloud is that the developers should be able to easily manage their own infrastructure. After all, they should be the people most familiar with the performance profile of their service/micro service/application. They should be the ones making decisions like using Aurora vs Dynamo vs managing your own dB on vms or bare metal vs a Hadoop cluster across VMs. They should own their deployment pipeline with CI/CD. If you have a dedicated DevOps person or team on a pure cloud application you are either a very large organization that is coordinating across multiple development teams that each have their own infra. Or you have built something brittle and not entirely cloud native (eg self managed Cassandra or elastisearch on a cluster of VMs). (Third possibility is a complex micro service architecture where it’s nice to have someone purely in-charge of “the system view” of the infrastructure even with a small number of developers.)