After I have experienced several fly.io render railway northflank platforms, I think the problem with fly.io is that the web console is not fully functional, too dependent on CLI and the response time of the application is unstable. The problem with render is that it is too slow to build, north is similar to railway, and the experience is good. But although the north console is very comprehensive, it is too complicated and dazzling. By contrast, the interface of railway is very simple and comprehensive, and UX is great. (found by wappalyzer analysis that it is based on nextjs,very nice)