Edge devices are physical hardware located in remote locations at the edge of the network with enough memory, processing power, and computing resources to collect data, process that data, and execute upon it in almost real-time with limited help from other parts of the network.
An IoT device is a physical object that has been connected to the internet and is the source of the data. An edge device is where the data is collected and processed.
Edge devices can be considered part of the IoT when the object has enough storage and compute to make low latency decisions and process data in milliseconds.
The terms IoT device and edge device are sometimes used interchangeably.
