Object Storage Service:Regions and endpoints

Asia Pacific – China

Asia Pacific – other regions

Europe and Americas

Middle East

How do I choose a region?

Use the scenario that best fits your situation:

Your users and workloads are concentrated in one location

Choose the region closest to your primary users or applications. Lower geographic distance typically means lower latency and more consistent performance. To measure latency between your network and OSS endpoints, run:

curl -o /dev/null -s -w "Connect: %{time_connect}s\nStart Transfer: %{time_starttransfer}s\nTotal: %{time_total}s\n" "https://oss-<region-id>.aliyuncs.com"

Lower time_connect and time_starttransfer values indicate better network performance.

Your application runs on Alibaba Cloud

Place your application (such as ECS instances or container services) in the same region as your OSS bucket. Traffic within the same region flows over Alibaba Cloud's internal network — no internet traffic charges apply.

You have compliance or data residency requirements

Data residency and regulatory requirements vary by region and industry. Choose a region that satisfies your obligations.

Cost is a priority

Pricing and promotions vary by region. See Object Storage Service pricing for details.

You need access to the latest features

New features typically launch in select regions first. To use the latest features, create your bucket in a supported region. See Release notes for OSS features.

Why do overseas region names appear differently across pages?

Some overseas region names differ between the OSS pricing page and the resource plan purchase page, but both refer to the same region. For example, US (Silicon Valley) may appear as"US West 1" or"US West" depending on the page. See Object Storage Service pricing or purchase a resource plan for details.For more information, see Object Storage Service pricing or purchase a resource plan.

What should I do if cross-border OSS access is slow or unstable?

Long-distance cross-border transfers travel over extended public internet paths through multiple network hops. Physical distance, routing complexity, and public network congestion can all cause high latency or unstable connections.

Deploy close to your data (recommended)

Place your applications (such as ECS instances or container services) in the same region as your OSS bucket. Traffic within the same region flows over Alibaba Cloud's high-speed internal network, bypassing the public internet and cross-border links entirely. For core production workloads, avoid long-distance cross-border reads and writes over the public internet. Migrating your application stack to the region where your data resides is the most effective way to eliminate network instability.

Use Transfer Acceleration

If cross-border access is unavoidable — such as for global content delivery or cross-region disaster recovery — enable OSS Transfer Acceleration. See Access OSS using transfer acceleration.