1.亚马逊S3：
Amazon S3 代表 Amazon Simple Storage Service。它是由 Amazon Web Services 提供的云存储服务。它通过 Web 服务接口提供对象存储。它允许存储任何类型的对象，如用于分析、数据存档、备份和恢复、灾难恢复、混合云存储和互联网应用程序的数据湖。它由 AWS 于 2006 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。
Amazon S3 和 Mega 之间的区别：
| AMAZON S3 | MEGA |
|---|---|
| It is owned by Amazon. | It is owned by Mega Limited. |
| It was launched in 2006. | It was launched in 2013. |
| It was developed by Amazon Web Services (AWS). | It was developed by Kim Dotcom. |
| It does not offer free storage space. | It offers 15 GB free storage space with additional 35 GB for free trial. |
| It provides unlimited storage space for paid. | It provides limited storage space for paid. |
| It requires credit-card details for free trial. | It does not require credit-card details for free trial. |
| It has the unlimited maximum storage size. | Maximum storage size is 16 TB here. |
| It does not provide applications for all operating systems and web based systems. | It provides applications for all operating systems and web based systems. |
| It supports file versioning. | It also supports file versioning. |
| It does not support remote uploading. | It also does not support remote uploading. |
| It has Amazon S3 limit as traffic or band-width limit. | It has traffic or band-width limit of 10 GB free and up to 96 TB per month for paid. |
| Maximum file size is 5 GB here. | Here maximum file size is equal to available cloud drive space. |