Got involved with setting up infrastructure on AWS for a fresh startup. Used claude code to do much of the detailed finagling and write terraform and docs on everything. HOLY SHIT. This would have taken me a week, perhaps two to fully do and validate the old way. With claude I have done the majority of it in 5 or 6 hours and it would have been even faster id I had written a full spec up front instead of winging it and changing my mind on a few things.