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A Region is an isolated geographic area; an Availability Zone (AZ) is one or more discrete data centres within a Region with redundant power and networking. Deploy across ≥2 AZs for high availability.
Place compute, storage, and select services closer to large population/industry centres, delivering single-digit-millisecond latency for demanding apps. An extension of a Region.
Sites used by CloudFront and other edge services to cache content and terminate connections close to users — far more numerous than Regions.
Latency/proximity to users, cost (prices vary by Region), compliance/data-residency requirements, and service availability.
A free tool in the console that reviews your workloads against the six pillars and produces improvement recommendations.
AWS groups services into categories such as compute, storage, database, networking, security, and analytics — an architect composes these into a solution.
Translate business requirements into technical solutions, balance the six pillars, justify trade-offs, and present designs that meet cost, performance, and reliability goals.
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