What is the CoAP protocol?

CoAP stands for Constrained Application Protocol and is a RESTful application protocol running over UDP, used for resource-constrained, low-power devices in lossy networks. CoAP is especially suited to the deployments of a high number of end devices within a network. These constrained devices are referred to as “Nodes” and the CoAP protocol allows the “nodes” to communicate with the wider Internet using similar protocols.