There are a number of factors to be considered when deciding between CoAP and MQTT protocols, and usually it is not an obvious or easy decision. However, there are noticeable differences between the two protocols:
- MQTT can be considered a many-to-many model, whereas CoAP is a one-to-one model.
- MQTT is TCP-based with more connection reliability, and CoAP is UDP-based with less overhead.
This table summarises some of the main differences between CoAP and MQTT protocols.
