It can be a lot of work creating an isolated dev/test environment if you already have a large app that communicate with a lot of services. But if you can that i

It can be a lot of work creating an isolated dev/test environment if you already have a large app that communicate with a lot of services. But if you can that is preferable as the test will create strange artifacts - but those systems is probably someone elses job to make sure they dont get corrupted ;)