I feel that R5 was the peak for web dev - that brought in the actual Domino server, which is where it became possible to have a split between your front-end and

I feel that R5 was the peak for web dev - that brought in the actual Domino server, which is where it became possible to have a split between your front-end and back-end, delivering web apps with whatever front-end tech you wanted, and making calls to the server as needed, similarly to modern API endpoints. They then kept trying to re-invent web development to be more tightly integrated, and it all went badly. R5 came out in 1999, and I rejected pretty much all their new front-end features after that point, but delivered a couple decades of web-based apps just using Domino as a back-end stack.