Matter is an application-layer connectivity standard developed by the Connectivity Standards Alliance (CSA) that allows smart home devices from different brands to interoperate over IP-based networks including Wi-Fi, Ethernet, and the Thread mesh protocol. It matters because it ends the fragmentation problem where proprietary smart home ecosystems (Apple, Google, Amazon, Samsung) refused to communicate with each other — a single Matter-certified device can be added to all four simultaneously via multi-admin. The key insight practitioners need: Matter is not a radio protocol — it is a language that runs on top of Wi-Fi, Ethernet, or Thread; and Thread is not a replacement for Matter but the preferred low-power transport for battery-operated devices.
What This Cheat Sheet Covers
This topic spans 18 focused tables and 150 indexed concepts. Below is a complete table-by-table outline of this topic, spanning foundational concepts through advanced details.
Table 1: Matter Version Timeline
Each Matter specification release follows a roughly biannual cadence. Understanding which version added which device types tells you whether your hub and device firmwares are compatible and which features are available — manufacturers are often multiple versions behind the current spec.
| Version | Example | Description |
|---|---|---|
Released Oct 4, 2022 | • First public release • supported lights, plugs, switches, door locks, thermostats/HVAC, window coverings, basic sensors (motion/contact), media players, and bridges. | |
Released May 18, 2023 | • Maintenance release — no new device types • focused on bug fixes, improved Intermittently Connected Device (ICD) handling, developer certification improvements | |
Released Oct 23, 2023 | Added nine new device types: refrigerators, dishwashers, laundry washers, room air conditioners, robotic vacuums, smoke/CO alarms, air quality sensors, air purifiers, and fans. | |
Released May 8, 2024 | Added kitchen appliances (ovens, microwaves, cooktops, extractor hoods, laundry dryers), EV charger (EVSE) support, water management devices, plus Scenes and Command Batching. | |
Released Nov 7, 2024 | Major update: HRAP (Home Routers and Access Points) as Matter device type, Enhanced Multi-Admin, solar panels, battery storage (BESS), heat pumps, water heaters, expanded EVSE, thermostat presets, ICD Long Idle Time (LIT). |