Baidu AI Cloud currently opens the multi-region support, and the three regions are currently supported: "North China - Beijing", "South China - Guangzhou" and "East China - Suzhou". Each region adopts a different domain name, and the specific domain name is blb.{region}.baidubce.com. The BLB API service domain name supports both HTTP and HTTPS calling methods. HTTPS calling is recommended to improve data security.