Regions & AZ

  • AWS Regions

    • Regions all the world.

    • Names can be us-east-1, eu-west-3 etc.

    • Cluster of data centres.

    • Most AWS services are region scoped.

How to choose an AWS Region?

  • Compliance with data governance and legal requirements: data never leaves a region without your explicit permission

  • Proximity to customers: reduce latency

  • Available services within a Region: new services and new features aren't available in every Region

  • Pricing: pricing varies region to region and is transparent in the service pricing page

  • AWS Availability Zones (AZ)

    • Each region has many availability zones (usually 3, min 3, max 6). e.g. ap-southeast-2a, ap-southeast-2b, ap-southeast-2c

    • Each AZ is one or more discrete data centres with redundant power, networking and connectivity.

    • Separate from each other so they are isolated from disasters.

    • Connected with hight bandwidth, ultra-low latency networking.

  • AWS Data Centres

  • AWS Edge Locations/Points of Presence

    • 400+ Points of Presence (400+ Edge Locations & 10+ Regional Caches) in 90+ cities across 40+ countries.

    • Content is delivered to end users with lower latency.

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