1. 云：
iCloud 是苹果公司提供的云存储和云计算服务。它允许用户将文档、照片和音乐等数据存储在远程服务器上，以便下载到 iOS、macOS 或 Windows 设备。它还能够与其他用户共享和发送数据。如果 Apple 设备丢失或被盗，管理它也很有帮助。它于2011年推出。
2. 超级：
Mega 是由 Mega Limited 提供的文件托管服务和云存储。它基本上是为基于 Web 的应用程序设计的，但它也为 Android、Windows Phone 和 iPhone 提供移动应用程序。它由Kim Dotcom于 2013 年推出。它使用 C++、JavaScript、 Java和 Objective-C 开发。它提供 15 GB 免费存储空间，另外还有 35 GB 免费试用。
iCloud 和 Mega 的区别：
| ICLOUD | MEGA |
|---|---|
| It is owned by Apple Incorporation. | It is owned by Mega Limited. |
| It was launched in 2011. | It was launched in 2013. |
| It was developed by Apple. | It was developed by Kim Dotcom. |
| It offers 5 GB free storage space. | It offers 15 GB free storage space with additional 35 GB for free trial. |
| It provides limited maximum storage space for paid. | It also provides limited storage space for paid. |
| It does not provide applications for all operating systems and web based systems. | It provides applications for all operating systems and web based systems. |
| Maximum storage size is 2 TB here. | Here maximum storage size is 16 TB. |
| It partly supports file versioning. | It fully supports file versioning. |
| It does not support remote uploading. | It also does not support remote uploading. |
| Maximum file size is 50 GB. | Here maximum file size is equal to available cloud drive space. |
| It has traffic or band-width limit of 200 GB or 400 GB or 600 GB per month. | It has traffic or band-width limit of 10 GB free and up to 96 TB per month for paid. |