What are Availability Zones in AWS?

  • An Availability Zone (AZ) is a datacenter owned and operated by AWS in which the AWS services run
  • Each AWS Region has atleast two Availability Zones
  • Availability Zones are represented by a Region Code, followed by a letter identifier
  • For example, US-East-1 has 6 Availability Zones:
    • US-East-1a
    • US-East-1b
    • US-East-1c
    • US-East-1d
    • US-East-1e
    • US-East-1f
  • One cannot choose an Availability Zone directly, one can choose a subnet which correlates to an Availability Zone
  • choosing a Multi-AZ infrastructure distributes instances across multiple Availability Zones, which allows fail over for handling requests when one AZ goes down.
  • This results in high-availability
  • An Availability Zone (AZ) is a datacenter owned and operated by AWS in which the AWS services run
  • Each AWS Region has atleast two Availability Zones
  • Availability Zones are represented by a Region Code, followed by a letter identifier
  • For example, US-East-1 has 6 Availability Zones:
    • US-East-1a
    • US-East-1b
    • US-East-1c
    • US-East-1d
    • US-East-1e
    • US-East-1f
  • One cannot choose an Availability Zone directly, one can choose a subnet which correlates to an Availability Zone
  • choosing a Multi-AZ infrastructure distributes instances across multiple Availability Zones, which allows fail over for handling requests when one AZ goes down.
  • This results in high-availability
Default image
Sriram Mannava

I'm a full-stack developer and a software enthusiast who likes to play around with cloud and tech stack out of curiosity.

Leave a Reply