What is a Matter-first hub and do I need one?

Matter is a cross-platform standard meant to let devices from different brands interoperate, often via a Thread border router. Hubs like the Aqara M3 act as Matter controllers and Thread border routers, bridging older Zigbee gear into Matter. Specialist communities caution that Matter and Thread support is still maturing, so reviewers recommend verifying that the specific devices you own are actually supported today rather than promised later.