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For Subnets in the same VPC, is Region independent?

I would like to set up more than two fully independent Availability Zones for Elastic Load Balancer(ELB).

Is it possible?

Jewon Yoo
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1 Answers1

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Yes:

  • Within a Region you create a VPC
  • The VPC is a logical concept and spans AZs
  • You then create subnets within the VPC for each AZ
  • Each AZ is a physically separate datacentre from another, normally 3 AZs or more per region
  • When you set up an ELB, you select the subnets that you want to use, select a subnet in each AZ
  • ELB will add instances across all 3 (or more) subnets/AZs
Matt D
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