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Understanding IBM Cloud's infrastructure helps you design applications that are performant, resilient, and compliant. This lesson covers regions, availability zones, data centres, and the network that connects them.
A Multizone Region (MZR) is a geographic area containing three or more independent availability zones. MZRs are designed for high availability — if one zone fails, your workload continues running in the remaining zones.
| Region | Region ID | Zones | Location |
|---|---|---|---|
| Dallas | us-south | 3 | Texas, USA |
| Washington DC | us-east | 3 | Virginia, USA |
| Frankfurt | eu-de | 3 | Germany |
| London | eu-gb | 3 | United Kingdom |
| Tokyo | jp-tok | 3 | Japan |
| Sydney | au-syd | 3 | Australia |
| Toronto | ca-tor | 3 | Canada |
| São Paulo | br-sao | 3 | Brazil |
| Osaka | jp-osa | 3 | Japan |
| Madrid | eu-es | 3 | Spain |
Consider these factors when selecting a region:
An availability zone is one or more data centres with independent power, cooling, and networking. Within an MZR:
Region: us-south (Dallas)
├── Zone 1 (us-south-1)
├── Zone 2 (us-south-2)
└── Zone 3 (us-south-3)
↕ High-speed private links ↕
Beyond MZRs, IBM Cloud operates 60+ data centres worldwide. These include:
Data centres are identified by codes like dal13 (Dallas 13), lon06 (London 6), or fra05 (Frankfurt 5).
IBM Cloud operates a private global backbone connecting all data centres and regions:
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