1.百度云：
百度云是百度公司提供的云服务。它提供云存储服务、客户端软件、文件管理、资源共享和第三方集成。一旦在客户端上创建文件，它就可以在基于 Internet 的客户端上自动同步文件。它由百度公司于2012年推出。它的实际名称是百度网盘，但俗称百度云。
2. Backblaze B2 :
Backblaze B2 是由 Backblaze Incorporation 提供的云存储服务。它与 Amazon S3 和其他云存储服务非常相似。它是一种对象存储服务。它由 Backblaze Incorporation 于 2015 年推出。它提供 10 GB 的免费存储空间。它还为高级帐户提供无限的存储空间。它也被称为 B2 云存储。
百度云与Backblaze B2的区别：
| Baidu Cloud | BACKBLAZE B2 |
|---|---|
| It is owned by Baidu Incorporation. | It is owned by Backblaze Incorporation. |
| It was launched in 2012. | It was launched in 2015. |
| It offers 6 GB free storage space. | It offers 10 GB free storage space. |
| It provides limited storage space for paid. | It provides unlimited storage space for paid. |
| It has the limited maximum storage. | Maximum storage size is unlimited here. |
| It is used in some specific region and specific countries like China. | While it is used world wide. |
| Maximum file size in Baidu Cloud is 4 GB for free and 20 GB for paid. | Here is no such restrictions. |
| Files are encrypted at servers. | Files are not locally encrypted. |
| It does not support file versioning. | It supports file versioning. |
| It charges comparatively more for additional storage that means it is more costly. | It charges less for additional storage that means it is less costly. |
| It provides full security of data. | It provides more security of data. |