# Cloud Infrastructure - Regions - Availability Zones - One or more Data Centers in a Region - Separated physically - Connected by low-latency link - Fault tolerant and highly available - Multi-AZ -- Highly Available - Edge Locations - Cached Content = Fast Delivery - Closer to Users - Local Zones - Extension of a Region, real-time gaming --- - Shared Responsibility Model - Provider = Security OF the Cloud, protecting and securing the cloud - You = Security IN the cloud --- - [[well-arch|Well-Architectured Framework]]