Yahoo has announced the launch of its new ad platform APT according to an article by the New York Times. APT, previously named Apex and AMP, is designed to simplify ad purchasing, by making it possible for advertisers to make purchases across a wide range of sites with one purchase. The platform also uses geographic, demographic and interest-based targeting to help advertisers to reach specific audiences. The platform is currently being tested on the San Jose Mercury News and The San Francisco Chronicle websites and the platform will expand to rest of Yahoo’s partners in its Newspaper Consortium later this year. The platform will open to advertisers, agencies and advertising networks in 2009.