The ability for me personally being able use my own test framework which I have developed over many years without having it tied into one specific proprietary cloud service was very helpful when we were looking around trying different options out there! It's not something i would suggest everyone uses - only if they are already using their favourite testing tooling then this might be useful otherwise stick w/ what works best within those tools (as mentioned above). We had used Selenium before so switching from an internal Jenkins setup where everything ran via selenium + java scripts etc., throughtout CI pipeline stages & release process onto Azure DevOps Server 2019 felt really natural after some initial teething issues getting things up'n running initially though once done all worked well together seamlessly now allowing us quicker time frames between releases while still ensuring quality across multiple environments e..g QA / Staging vs Production builds I love that Testim is easy to use. It's intuitive and simple. I also love the ability to integrate with Jenkins. I dislike that I can't have more than one test running at a time. I use Testim for automated testing of our React Native apps.