A device gateway acts as an intermediary between individual devices and a broader network or cloud infrastructure, managing connectivity, ensuring interoperability, and facilitating communication and integration between these devices and networks. It operates like a translator to various protocols, serving as an orchestrator at the edge of the IoT network, converting and bridging data across different layers of the open systems interconnection model. Device gateways come in various types, including cloud-based, edge, wearable, protocol, and security gateways, each with its own architecture consisting of hardware and embedded software components that manage operations and interaction. They are used to enhance connectivity, provide a unified interface, implement security measures, facilitate centralized device management, and enable seamless communication between devices using different protocols.