> million concurrent users sure, but 99% of sysadmins/devops/SRE/whatever will never work on anything that has million concurrent users. Most startup will ne

> million concurrent users sure, but 99% of sysadmins/devops/SRE/whatever will never work on anything that has million concurrent users. Most startup will never reach million concurrent users. And if they do, investors will happily shuffle as much money as you need to make your site work at that scale. Hell even million monthly users is a nice milestone that most projects never reach, and that usually translates to couple of thousand concurrent request (peak), that average laptop could handle.