What is the AWS Global Infrastructure?

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The AWS Global Infrastructure is the worldwide physical network of data centers, edge sites, and network links that delivers AWS services. Regions (33+) — geographic clusters of data centers. Availability Zones (100+) — isolated data centers within a Region (3+ per region typical). Edge Locations (600+) — CloudFront / Global Accelerator PoPs. Regional Edge Caches — mid-tier caches between edge and origin. Local Zones — Region extensions in metro areas for ultra-low-latency workloads. Wavelength Zones — embedded in 5G provider networks for mobile-edge compute. Outposts — AWS hardware on-prem for hybrid use cases. Connected by AWS-owned private fiber backbone — single-digit-ms latency between AZs and Region-to-Region paths optimized for throughput. Memorize the hierarchy — Regions → AZs → Edge Locations — and add Local Zones / Wavelength / Outposts to show you know hybrid and edge options.