1.阿里云日志服务：
日志服务是阿里巴巴集团开发的完整的实时数据记录服务。它是一个完整的实时数据记录服务，支持日志的收集、消费、发送、搜索和分析。
2. 亚马逊简单数据库：
它是亚马逊托管的简单数据库服务，数据存储在亚马逊云中。 Amazon 是一项网络服务，用于实时对结构化数据运行查询。这个数据库是由 Amazon.com 用 Erlang 编写的。它具有以下特点——高可用性和灵活性，很少或没有管理负担。
阿里云日志服务与 Amazon SimpleDB 的区别：
| S.NO. | Alibaba Cloud Log Service | Amazon SimpleDB |
|---|---|---|
| 1. | Developed By AlibabaCloud Inc. in 2016. | Developed By Amazon in 2007. |
| 2. | It is complete real-time data logging service that supports collection, consumption, shipping, search, and analysis of logs. | It is hosted simple database service by Amazon, with the data stored in the Amazon Cloud. |
| 3. | It offers an ES-Hadoop Connector as a Map/Reduce methods. | It does not offer an API for user-defined Map/Reduce methods. |
| 4. | It supports 3 replicas. | It supports replication methods. |
| 5. | Its primary database model is a Search engine. | Its primary database model is the Key-value store. |
| 6. | It supports SQL query language. | It does not support the SQL query language. |
| 7. | There is only one partitioning method – Sharding. | It does not support partitioning methods. |
| 8. | It supports predefined data types such as float or date. | It does not support predefined data types such as float or date. |
| 9. | Eventual Consistency is used to ensure consistency in a distributed system. | Eventual Consistency and Immediate Consistency are used to ensure consistency in a distributed system. |