Is there a difference between China Mobile and Cai Yun and the address book?

And Caiyun business is a cross-platform and cross-terminal one-stop cloud digital life center built by China Mobile for customers. It is based on storing nine categories of personal information assets such as users' pictures, messages and address books, and synchronizes multi-terminal content through the cloud. "He Address Book" relies on the mobile phone client to provide customers with a safe, efficient and convenient address book management tool, which can back up mobile phone contacts to the cloud network or restore them to the mobile phone from the network, and can view or conveniently manage the address book stored in the cloud anytime and anywhere through WWW, WAP website, SMS, etc.