ZigBee protocol is synonymous with the IEEE 802.15.4 protocol. The technology specified in this agreement is a short-range, low-power wireless communication technology.
Introduction to zigbee
Zigbee Protocol - an overview
What Is Zigbee Technology And How Does It Work? – Vesternet
Understanding the Zigbee 3.0 Protocol
Introduction to ZigBee Wireless Communication
IoT Future with BLE and ZigBee Embedded Technology - iWave Systems
Zigbee technology
Zigbee Tutorial – IoT-Point
The IEEE 802.15.4/ZigBee protocol stack architecture The IEEE
Introduction of ZigBee - GeeksforGeeks
Is ZigBee Poised to Become the Wireless Standard for IoT?
Zigbee Introduction, Zigbee vs WiFi
What is Zigbee? Definition from TechTarget
Connectivity Standards Alliance's Zigbee Direct Feature in Development - CSA-IOT
Zigbee Protocol Architecture