The Windows Server 2008 R2 Standard ISO file is not publicly available for download. You can purchase a copy of the operating system from Microsoft or an authorized reseller.
While PowerShell launched earlier, 2008 R2 baked it in. It introduced remoting ( Invoke-Command ), background jobs, and the ability to manage Exchange, SQL, and AD entirely from the command line. This ISO helped kill the "click-next" admin. windows server 2008 r2 standard iso
This guide covers everything you need to know about sourcing the ISO, system requirements, and installation basics. The Windows Server 2008 R2 Standard ISO file
This software should never be exposed to the public internet. It should strictly be used for isolated labs, internal legacy app support (air-gapped), or educational purposes. and the ability to manage Exchange