OzTAM manages and markets television ratings data covering all channels for the five city metropolitan areas and nationally for Subscription television. OzTAM television ratings information is the currency by which television is bought, sold and evaluated. It is used by organizations such as television networks, advertisers, advertising agencies, media buyers and program suppliers. They use the data to assist them in assessing program and network performance and to understand viewer behavior. OzTAM encourages joint media and advertising participation to address relevant industry matters. The company is owned by the three metropolitan commercial television networks Seven, Nine and Ten. It's responsible for the management of the Television Audience Measurement contract, held by research service provider, AGB Nielsen Media Research.
The ABC television network, Media Federation of Australia, Advertising Federation of Australia, Australian Association of National Advertisers and Australian Subscription Television & Radio Association have observer status at OzTAM board meetings. OzTAM has a Technical Advisory Committee, which comprises representatives from the media industry. The committee is a forum where technical issues regarding the ratings service are discussed with a focus on continuous improvement.