An IoT (Internet of Things) gateway is a network device that connects IoT devices to other networks or the Internet. In essence, it is a piece of hardware or software that enables internet-connected objects (IoT) to connect to the network and communicate with other objects or services.

Types of IoT Gateway are made to handle a range of activities, including data filtering, protocol translation, security, and network management. Usually, they offer capabilities like device management, data processing and analysis, and interaction with cloud-based applications.