Stackoverflow give several ways to resolve localhost HSTS issue (redirect from http to https). My laptop is managed by my employer and registry can’t be edited. "How can I see which sites have set the HSTS flag in my edge browser?" in chatgpt give me an answers. One step of the answer get my attention. I can change HSTS in my application for development environment. It is too late now.

In my previous two companies, everytime I used the subdomain way without thinking much about this. Recently I wondered the rational behind this decisions. I had the clear answers two days ago. Today I have the time to put it into this writing. Factors subdomain(dev.example.com) subdomain reasons path (example.com/dev/) path reasons server side performance 9 dns records point to differnent IP.