Region and AZ

What Are Region and AZ?

A region and an availability zone (AZ) identify the location of a data center. You can create resources in a specific region and AZ.

Regions are divided based on geographical location and network latency. Public services, such as Elastic Cloud Server (ECS), Elastic Volume Service (EVS), Object Storage Service (OBS), Virtual Private Cloud (VPC), Elastic IP (EIP), and Image Management Service (IMS), are shared within the same region. Regions are either universal or dedicated. A universal region provides universal cloud services for common tenants, while a dedicated region provides services of the same type only or for specific tenants.
An AZ contains one or more physical data centers. Each AZ has independent cooling, fire extinguishing, moisture-proof, and electricity facilities. Within an AZ, compute, network, storage, and other resources are logically divided into multiple clusters. AZs within a region are interconnected using high-speed optical fibers, to support cross-AZ high-availability systems.

Figure 1 shows the relationship between regions and AZs.

Figure 1 Regions and AZs

Huawei Cloud provides services in many regions around the world. You can select a region and an AZ based on requirements. For more information, see Huawei Cloud Global Regions.

Selecting a Region

When selecting a region, consider the following factors:

Geographical location
Select a region closest to your target users for lower network latency and quick access.
- If your target users are in Asia Pacific (excluding the Chinese mainland), select the CN-Hong Kong, AP-Bangkok, or AP-Singapore region.
- If your target users are in Africa, select the AF-Johannesburg region.
- If your target users are in Latin America, select the LA-Santiago region.
  
  The LA-Santiago region is located in Chile.
Resource price
Resource prices may vary in different regions. For details, see Product Pricing Details.