TVs and many devices usually include DLNA as one of the
features. For most of us, it is unimportant and we do not even
know what it means. Since it is a standard, manufacturers and
stores to not use it as a selling point, because almost all
devices have the feature.
DLNA stands for Digital Living Network Alliance, the trade group
founded by Sony in 2003 to define the interoperability
guidelines.
It separates multimedia devices into 10 certified classes
subdivided into three broad categories: Home Network Devices
(PCs, TVs, AV receivers, game consoles), Mobile Handheld Devices
(smartphones, tablets, digital cameras), and Home Infrastructure
Devices (routers and hubs). All DLNA-certified devices use
Universal Plug and Play (UPnP) to discover and talk to each
other on the network.