The ease of use, how it works for us as an organization is that we can quickly spin up multiple environments without needing many resources or expertise from our team members. Having different versions in place allows you flexibility when things are not working out perfectly well. We have been able run tests against all instances simultaneously so that if one instance fails then no other gets affected by this failure point. Very friendly UI makes setup very easy. There isn't much I dislike about jet stack pre- flight tool but nothing comes immediately into my mind right now which needs improvement either way! It's great service provided at low cost price considering what they do especially since its open source software. Testing across various environment has become easier thanks to their implementation.