No, Tencent Cloud Object Storage (COS) does not need to be bound to a domain name. COS can be accessed using its unique URL, which is in the format of https://<BucketName>.cos.<Region>.myqcloud.com. Here, <BucketName> is the name of your bucket, and <Region> is the geographical region where your bucket is located.
For example, if you have a bucket named myphotos in the Guangzhou region, you can access it using the URL https://myphotos.cos.ap-guangzhou.myqcloud.com.
However, if you want to use a custom domain name for better branding or ease of use, you can bind a domain name to your COS bucket through the Tencent Cloud Domain Name System (DNS) service. This allows users to access your COS resources using a more memorable and user-friendly domain name.
For instance, you can bind photos.mydomain.com to myphotos.cos.ap-guangzhou.myqcloud.com, enabling users to access your photos using https://photos.mydomain.com.
Tencent Cloud provides a comprehensive suite of services to support domain name management and DNS configuration, making it easy to integrate with COS.