Zigbee Alliance is a consortium of companies committed to open standards for Internet of Things infrastructure and gadgets. It is a certification programme that helps make sure devices are compatible with one another and adhere to international standards for wireless Internet of Things (IoT) connection. Zigbee, an open standard for constructing low-power, self-organizing mesh networks, is one of its most well-known achievements. Interoperability problems are minimized since all Zigbee-certified devices speak the same IoT language when connecting and communicating with one another. Zigbee is built on top of the IEEE 802.15 standard and adds a network layer, security features, and an application framework.