AWS Availability Zones

  • Each region has many availability zones (usually 3, min is 3, max is 6). Example:

    • ap-southeast-2a

    • ap-southeast-2b

    • ap-southeast-2c

  • Each availability zone (AZ) is one or more discrete data centers with redundant power, networking, and connectivity

  • They’re separate from each other so that they’re isolated from disasters

  • They’re connected with high bandwidth, ultra-low latency networking

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