: You can still find evaluation versions like the Windows Server 2008 R2 SP1 for Itanium-Based Systems , which allows for a 180-day trial period.
For detailed technical specifications, refer to these authoritative guides: Microsoft Security Baselines Security Compliance Manager to automate security settings. STIG Guidelines Windows Server 2008 R2 STIG from NIST provides a defense-grade security baseline. Hardening Checklist : A community-maintained Server Hardening Checklist for ISO compliance. group policy settings required for ISO 27001 audit compliance? Windows 2008R2 Server Hardening Checklist - ISO iso windows server 2008 r2 verified