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.
List of AWS regions and their availability zones
1
us-east-1
Virginia
4
us-east-1a us-east-1b us-east-1c us-east-1e
2
us-west-2
Oregon
3
us-west-2a us-west-2b us-west-2c
3
us-west-1
N. California
3
us-west-1a us-west-1b
4
eu-west-1
Ireland
3
eu-west-1a eu-west-1b eu-west-1c
5
eu-central-1
Frankfurt
2
eu-central-1a eu-central-1b
6
ap-southeast-1
Singapore
2
ap-southeast-1a ap-southeast-1b
7
ap-southeast-2
Sydney
3
ap-southeast-2a ap-southeast-2b ap-southeast-2c
8
ap-northeast-1
Tokyo
2
ap-northeast-1a ap-northeast-1c
9
ap-northeast-2
Seoul
N/A
N/A
10
sa-east-1
Sao Paulo
3
sa-east-1a sa-east-1b sa-east-1c
11
cn-north-1
China (Beijing)
N/A
N/A
12
ap-south-1
India (Mumbai)
2
ap-south-1a ap-south-1b
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