AWS Availability Zones
Availability Zones are isolated locations within an AWS Region, with independent power, cooling, and networking connected through high-bandwidth, low-latency links.
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Availability Zone statistics
AWS regions with Availability Zones
Zone identifiers are account-independent names from the current public region dataset. Account-specific zone IDs can be used when consistent physical-zone mapping is required.
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| Region | Geography | Datacenter | Availability Zones | Zone names |
|---|---|---|---|---|
Africa (Cape Town) af-south-1 | South Africa | Cape Town | 3 | af-south-1a af-south-1b af-south-1c |
Asia Pacific (Hong Kong) ap-east-1 | Hong Kong | Hong Kong | 3 | ap-east-1a ap-east-1b ap-east-1c |
Asia Pacific (Hyderabad) ap-south-2 | India | Hyderabad | 3 | ap-south-2a ap-south-2b ap-south-2c |
Asia Pacific (Jakarta) ap-southeast-3 | Indonesia | Jakarta | 3 | ap-southeast-3a ap-southeast-3b ap-southeast-3c |
Asia Pacific (Malaysia) ap-southeast-5 | Malaysia | Malaysia | 3 | ap-southeast-5a ap-southeast-5b ap-southeast-5c |
Asia Pacific (Melbourne) ap-southeast-4 | Australia | Melbourne | 3 | ap-southeast-4a ap-southeast-4b ap-southeast-4c |
Asia Pacific (Mumbai) ap-south-1 | India | Mumbai | 3 | ap-south-1a ap-south-1b ap-south-1c |
Asia Pacific (New Zealand) ap-southeast-6 | New Zealand | New Zealand | 3 | ap-southeast-6a ap-southeast-6b ap-southeast-6c |
Asia Pacific (Osaka) ap-northeast-3 | Japan | Osaka | 3 | ap-northeast-3a ap-northeast-3b ap-northeast-3c |
Asia Pacific (Seoul) ap-northeast-2 | South Korea | Seoul | 4 | ap-northeast-2a ap-northeast-2b ap-northeast-2c ap-northeast-2d |
Asia Pacific (Singapore) ap-southeast-1 | Singapore | Singapore | 3 | ap-southeast-1a ap-southeast-1b ap-southeast-1c |
Asia Pacific (Sydney) ap-southeast-2 | Australia | Sydney | 3 | ap-southeast-2a ap-southeast-2b ap-southeast-2c |
Asia Pacific (Taipei) ap-east-2 | Taiwan | Taipei | 3 | ap-east-2a ap-east-2b ap-east-2c |
Asia Pacific (Thailand) ap-southeast-7 | Thailand | Thailand | 3 | ap-southeast-7a ap-southeast-7b ap-southeast-7c |
Asia Pacific (Tokyo) ap-northeast-1 | Japan | Tokyo | 3 | ap-northeast-1a ap-northeast-1c ap-northeast-1d |
Canada (Central) ca-central-1 | Canada | Central | 3 | ca-central-1a ca-central-1b ca-central-1d |
Canada West (Calgary) ca-west-1 | Canada | Calgary | 3 | ca-west-1a ca-west-1b ca-west-1c |
Europe (Frankfurt) eu-central-1 | Germany | Frankfurt | 3 | eu-central-1a eu-central-1b eu-central-1c |
Europe (Ireland) eu-west-1 | Ireland | Ireland | 3 | eu-west-1a eu-west-1b eu-west-1c |
Europe (London) eu-west-2 | United Kingdom | London | 3 | eu-west-2a eu-west-2b eu-west-2c |
Europe (Milan) eu-south-1 | Italy | Milan | 3 | eu-south-1a eu-south-1b eu-south-1c |
Europe (Paris) eu-west-3 | France | Paris | 3 | eu-west-3a eu-west-3b eu-west-3c |
Europe (Spain) eu-south-2 | Spain | Spain | 3 | eu-south-2a eu-south-2b eu-south-2c |
Europe (Stockholm) eu-north-1 | Sweden | Stockholm | 3 | eu-north-1a eu-north-1b eu-north-1c |
Europe (Zurich) eu-central-2 | Switzerland | Zurich | 3 | eu-central-2a eu-central-2b eu-central-2c |
Israel (Tel Aviv) il-central-1 | Israel | Tel Aviv | 3 | il-central-1a il-central-1b il-central-1c |
Mexico (Central) mx-central-1 | Mexico | Central | 3 | mx-central-1a mx-central-1b mx-central-1c |
Middle East (UAE) me-central-1 | United Arab Emirates | UAE | 3 | me-central-1a me-central-1b me-central-1c |
South America (Sao Paulo) sa-east-1 | Brazil | Sao Paulo | 3 | sa-east-1a sa-east-1b sa-east-1c |
US East (N. Virginia) us-east-1 | United States | N. Virginia | 6 | us-east-1a us-east-1b us-east-1c us-east-1d us-east-1e us-east-1f |
US East (Ohio) us-east-2 | United States | Ohio | 3 | us-east-2a us-east-2b us-east-2c |
US West (N. California) us-west-1 | United States | N. California | 2 | us-west-1a us-west-1b |
US West (Oregon) us-west-2 | United States | Oregon | 4 | us-west-2a us-west-2b us-west-2c us-west-2d |
Additional resources
Use these references to plan resilient architectures across AWS Availability Zones.
Regions and Availability Zones
Review AWS infrastructure concepts and the current global footprint.
Read guidanceAvailability Zone IDs
Learn how zone names and account-independent zone IDs map to physical locations.
Read zone ID guidanceAWS Well-Architected
Review reliability guidance for multi-AZ and multi-region workload design.
Read reliability guidanceFrequently asked questions
How are AWS Availability Zones isolated?
Availability Zones use separate facilities and infrastructure to reduce correlated failures while remaining connected through private, high-bandwidth, low-latency networking.
Are zone names the same for every AWS account?
Zone names such as us-east-1a can map differently between accounts. Use Availability Zone IDs when workloads in multiple accounts must refer to the same physical zone.
Does every AWS service support multi-AZ deployment?
No. Availability Zone support and deployment behavior vary by service and region. Review the service documentation and test the workload's failure behavior before production use.