AWS prescriptive-guidance documentation change
Summary
Renamed file from welcome.md to introduction.md, updated PDF anchor, modified title, changed date from August 2025 to December 2025, added new section about AWS SRA library, updated foundations section title, removed architecture deep dive section, added best practices checklist, and removed privacy reference architecture section and diagram download note.
Security assessment
Changes are structural/organizational improvements to the documentation framework. The removal of the privacy architecture section and addition of checklist don't indicate security vulnerabilities. No evidence of security incident remediation or new security features documentation.