For me, the absolute best thing about Devin is its complete autonomy and the way it handles the entire end-to-end automation process without needing me to babysit it. I can simply drop in a link to the test suite from Azure DevOps, and it takes it from there. It logs into the application, finds the UI elements, and writes the Java code in the local Eclipse setup we have on its machine. The fact that it can run the tests and keep healing the script until it passes is a massive time-saver. I can have five different sessions running in parallel, which means I’m getting a whole week’s worth of manual automation done in a single day. Ease of use is genuinely high because it’s mostly just natural-language prompting. I don’t have to write code snippets the way I do with other ai tools; I just explain the logic and it does the rest. Implementation was a bit more of a project, though, because setting up the dedicated machine with Eclipse and the right paths for our Azure Git repo took some time. Once that was done, everything has been smooth. The integration with Azure DevOps is surprisingly good as well, since it has a native way to handle those connections through the secrets manager and PAT. I use Devin almost every single day now for any new test case development. The feature set is impressive, especially how it creates its own computing environment and uses its own browser to analyze the UI. It feels more like an actual teammate than just a tool. Customer support has been fairly responsive when I’ve hit those weird ACU consumption bugs, although most of the time I can figure things out from the logs Devin provides. Like I mentioned, it’s not perfect. Sometimes it gets overexcited and changes core framework methods, which is something I have to watch out for in every PR. And that deviation after 50 ACU is definitely annoying, because it starts to ignore the initial logic. Still, as a tester who wants to scale up automation quickly, these feel like small prices to pay for the amount of work it gets done. It has completely changed how I manage my sprint tasks.