to add Matter-over-Thread support to Echo devices this spring

Matter is a new smart home interoperability standard that provides a common language for smart home devices to communicate locally in your home without relying on a cloud connection

Matter update brings iOS setup, Thread for Echo, more - 9to5Mac

How to build an Alexa-based smart home - Android Authority

TUO Contact Sensor with Matter & Thread Support, Control Smart Home Accessories, Works with Apple Home / Google Home / Samsung SmartThings / Alexa, Door / Garage Sensor : : DIY & Tools

Matter & Thread: where we're at - Home Assistant

launches Matter over Thread

s Echo Hub is available now—here's how it works

Using the Matter for Multiprotocol Networks

Where Matter support stands, and what devices are coming, in early 2023

Alexa gets Matter support, joining Google Home and Android