"All the downstream services are mocked, you don’t need to set up a test environment." Could you elaborate on how this is achieved? Eg, say I have a lambda en

"All the downstream services are mocked, you don’t need to set up a test environment." Could you elaborate on how this is achieved? Eg, say I have a lambda endpoint and the code in it is querying one or more databases. Are you somehow automatically hooking into those function calls, recording their return values, and then mocking the functions in the replays? Or are you doing something else entirely?