1. 物联网：
物联网被称为物联网，其中事物被称为可以使用通信媒体相互交互的通信设备。通常每天都会集成一些使用物联网设备来实现其函数的新设备。这些设备使用各种传感器和执行器通过互联网发送和接收数据。这是一个生态系统，其中设备通过称为互联网的通信媒体共享数据。
2.机器对机器：
这通常称为机器对机器通信。这是一个概念，其中两台或两台以上的机器使用有线或无线机制在没有人为交互的情况下相互通信。 M2M 是一种帮助设备在不使用互联网的情况下在设备之间进行连接的技术。 M2M 通信提供多种应用，例如安全、跟踪和追溯、制造和设施管理。
物联网和 M2M 之间的区别：
| Basis of | IoT | M2M |
|---|---|---|
| Abbreviation | Internet of Things | Machine to Machine |
| Intelligence | Devices have objects that are responsible for decision making | Some degree of intelligence is observed in this |
| Connection type used | The connection is via Network and using various communication types. | The connection is a point to point |
| Communication protocol used | Internet protocols are used such as HTTP, FTP, and Telnet. | Traditional protocols and communication technology techniques are used |
| Data Sharing | Data is shared between other applications that are used to improve the end-user experience. | Data is shared with only the communicating parties. |
| Internet | Internet connection is required for communication | Devices are not dependent on the Internet. |
| Scope | A large number of devices yet scope is large. | Limited Scope for devices. |
| Business Type used | Business 2 Business(B2B) and Business 2 Consumer(B2C) | Business 2 Business (B2B) |
| Open API support | Supports Open API integrations. | There is no support for Open Api’s |
| Examples | Smart wearables, Big Data and Cloud, etc. | Sensors, Data and Information, etc. |