Windows 11 might be the latest version of Windows, but if you still use Windows 10 and need to "clean install" the operating system, or install or upgrade to it for the first time on an older PC, ...
So, it seems getting a dvd to install is not a 2020 thing. Last time I installed Windows was 7 which then got upgraded online to 10. So, if you want to build new, you can't buy a dvd and the build in ...