Matter
Matter is the end-state for smart home interoperability. Any connected home product launched today needs Matter support. Understanding commissioning, fabric topology, and the data model is essential for IoT product developers.
What It Defines
Matter (formerly Project CHIP) is the unified smart home connectivity standard from the Connectivity Standards Alliance. Runs over IPv6 (Thread, Ethernet, Wi-Fi), uses CASE (Certificate-Authenticated Session Establishment) for device commissioning, defines device types (lights, locks, thermostats, bridges), and provides an Interaction Model (subscribe, read, write, invoke). Supported by Apple, Google, Amazon, and Samsung.
Canonical (Normative)
Convenient (Practical)
Industry consortium (formerly Zigbee Alliance) that develops IoT connectivity standards. Merged with the Thread Group. Maintains Matter (smart home unification), Zigbee, and Z-Wave specifications. Members include Apple, Google, Amazon, Samsung, and all major IoT chipmakers.
Related Specs
Thread is the networking layer under Matter — when you see Matter over Thread, Thread is doing the mesh networking. Understanding the border router, DTLS commissioning, and leader/router/end-device roles is required for Matter deployments.
Zigbee is installed in hundreds of millions of devices. Smart lighting (Hue, IKEA Trådfri), home hubs (SmartThings, Home Assistant), and building automation all use it. Understanding ZCL clusters and coordinator setup is required for integrations.
Wi-Fi 6/6E is the current enterprise and consumer wireless standard. OFDMA and TWT are especially relevant for dense IoT deployments and high-density venues like offices and stadiums.