What key characteristic differentiates IPTV from traditional TV delivery methods?

The key characteristic that differentiates IPTV from traditional TV delivery methods is that IPTV is formatted for transport over a packet-switched network. This means that IPTV delivers television content over internet protocol (IP) networks rather than the traditional methods of broadcasting such as satellite or terrestrial signals. In a packet-switched network, data is broken down into packets and transmitted independently, which allows for more efficient, flexible, and scalable delivery of multimedia content, including video on demand and streaming services.

Traditional TV delivery methods typically involve broadcast signals transmitted through dedicated channels, such as coaxial cable or satellite systems, which do not use IP for content delivery. Therefore, the ability of IPTV to function over a packet-switched network enables it to utilize existing internet infrastructures, providing consumers with greater interactivity, personalized content, and the potential for higher bandwidth options.