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