In a service I manage I have distributed tracing in place, as well as centralized logging. I also have sandbox deployments in place that individual developers

In a service I manage I have distributed tracing in place, as well as centralized logging. I also have sandbox deployments in place that individual developers can take over and deploy the services they're working on to be able to test them in an environment that is very similar to the prod environment. I also have in place a few Docker compose scripts for specific services that deploy a combination of dependencies, either the service itself or stubbed services. For function-as-a-service code, I have special local-only, pre-beta deployment stages that fake clients.