Avoid doing a hard rewrite/relaunch, do a gentle "sunsetting" over time 1 Keep the old application but keep track of how many hits it gets 2 Make a new competing application, also tracking its hits Then launch them side-by-side, giving the user a choice about which one they want to use, maybe even having cross links to make them able to "jump to the other side". Keep a look at the statistics to see if the new one is gaining or losing. I think you get the basic idea. Suggested reading: https://medium.com/@herbcaudill/lessons-from-6-software-rewrite-stories-635e4c8f7c22[^]