The application layer can also be called a processing layer that solves information processing and human computer interface problems. This layer processes data sent from the network layer into different information systems and collaborates with people through different devices. The processing layer consists of a middleware platform, a network management platform (e.g. M2M management platform), information processing platform, information security platform, service support platform, etc. It consists of providing collaboration, management, calculation, storage, analysis, mining and services to industry and public users. Typical technologies are intermediate software, virtual technology, highly reliable technology, cloud computing,