The main benefit for amazon's tools is once you've been there a while you know how they work, and all the complexity and bugs have been stripped out of them. An

The main benefit for amazon's tools is once you've been there a while you know how they work, and all the complexity and bugs have been stripped out of them. And because they force engineers to go oncall everyone has a pretty good idea of how to fix things. When you have SRE's spending all day creating the next new thing (generally after deprecating the previous one with no replacement), you end up in a situation where you forget how to say, rollback a bad deployment. Or scale a fleet. The problem with fancy infrastructure as code, containers and logging services is when they break you have no idea how to get out of trouble. SSH and grep almost always work, as does symlinking a directory.