IoT Gateway

Definition & Role: An IoT gateway is a device that connects IoT devices (sensors, actuators) to the internet or a cloud platform, bridging local networks and remote servers.

Protocol Translation: It translates different communication protocols (e.g., Zigbee, LoRa, Modbus, BLE) into standard IP-based protocols so devices with diverse interfaces can communicate seamlessly.

Edge Processing: Many IoT gateways perform local data processing (edge computing), filtering, aggregating, or analyzing data before sending it to the cloud to reduce latency and bandwidth usage.

Security Functions: Gateways provide secure connectivity through encryption, device authentication, and sometimes firewall or VPN functionality to protect data in transit.

Connectivity Options: Supports multiple network types, including Wi‑Fi, Ethernet, cellular (4G/5G), LPWAN (LoRaWAN, NB‑IoT), and satellite, depending on deployment requirements.

Applications: Widely used in industrial IoT, smart cities, smart homes, healthcare, energy management, and transportation to centralize control and monitoring of distributed IoT devices.