Explore the decade-long evolution of AWS Key Management Service (KMS) architecture in this 56-minute conference talk from AWS re:Invent 2025. Trace the journey from solving fundamental key management challenges to meeting complex regulatory and compliance requirements driven by data privacy and sovereignty needs. Dive deep into the current AWS KMS architecture, operational processes, and technical controls that work together to ensure customer trust and security. Discover insights into the AWS European Sovereign Cloud, including how its partition utilization and corporate governance model deliver enhanced security assurance and sovereignty capabilities for organizations with stringent compliance requirements.