Overview: open standard, multi-vendor supported solution that enables devices from multiple vendors to onboard, configure, and communicate with each other to create an adaptive network of extended, uniform coverage. 

Authorized official web link: https://www.wi-fi.org/knowledge-center/faq/what-is-wi-fi-easymesh 

Look out for devices with the Wi-Fi EasyMesh™ mark. All of our SoGEA & FTTP routers are already certified and you can be confident that Wi-Fi EasyMesh™ is fully supported.

Attached: official document with overview of the program