To store objects in COS, you first need to create a bucket through the console, tools, APIs, or SDKs.

After creating a bucket, you can upload objects to it and configure other features for it, such as setting up a static website, setting bucket tags, and setting bucket encryption. For more configuration guidelines, please see Console Overview.

Restrictions

1. One root account can create up to 200 buckets.
2. Once a bucket is created successfully, its name and region cannot be modified.
3. Bucket names under the same root account must be unique and cannot be changed.
4. A bucket name can contain letters, digits, and hyphens (-). The number of characters a bucket name is allowed to contain is limited by the length of the region abbreviation and APPID. The combined domain name can be up to 60 characters. For example, the domain name 123456789012345678901-1250000000.cos.ap-beijing.myqcloud.com contains 60 characters.
5. A bucket name cannot start or end with "-".

Directions

Using COS console

You can create a bucket in the COS console. For more information, please see Creating Buckets.

Using tools

You can use tools such as COSBrowser and COSCMD to create buckets. For more information, please see Tool Overview.

Using REST APIs

You can use the REST API directly to initiate a bucket creating request. For more information, see PUT Bucket.

Using SDKs

You can directly call the bucket creating method in the SDK. For more information, see the SDK documentation for the corresponding programming language below:

• Android SDK
• C SDK
• C++ SDK
• .NET SDK
• Go SDK
• iOS SDK
• Java SDK
• Node.js SDK
• PHP SDK
• Python SDK
• SDK for WeChat Mini Program