Wireless mesh has been around since the early times of Wi-Fi but is getting more attention lately in the consumer world. There are mesh systems out from Google, Eero, Linksys, Netgear, and pretty much every networking brand that targets homes and small offices. But there are Wi-Fi mesh solutions for the enterprise market as well.
The idea behind Wi-Fi mesh networks is that not all the access points (AP) have to plug into the wired infrastructure. Those that aren’t plugged in get their network connection wirelessly from a nearby mesh AP. For smaller mesh networks, you might only have to have one mesh AP plugged into the wired network. In larger networks, you would need multiple mesh APs plugged into the network to support those that are wirelessly connected.