Well think about it, if you're unit testing or functional testing (full stack api based but mocked out downstreams) then you have at least 2 maybe 3 platforms t

Well think about it, if you're unit testing or functional testing (full stack api based but mocked out downstreams) then you have at least 2 maybe 3 platforms to run against. The real, the mock and maybe the more fancy mock for the functional tests. So say you were talking directly to dynamo api for all of this, it's a lot harder to mock out the dynamo API than it is to mock out a simple 3 method interface.