Introduction
One protocol to connect compatible devices and systems with one another. Smart home devices should be secure, reliable, and seamless to use. And with Matter, they are - CSA-IOT. You can read more about Matter here
Matter Devices are connected on a virtual network within the home called a Matter Fabric. To Implement a Matter Fabric there are important concepts like Fabric, Node, CAT ID, Node ID, Fabric ID, IPK, NoC, RCAC. Each of these follows a defined specification.
Fabric
A fabric is a security domain that allows a set of nodes to be identified and communicate within the domain's context. In other words, it is a logical grouping of devices.
One needs to create Fabric first and then start adding the devices to the fabric. A device or node can be part of multiple Fabrics.