The Interactive Advertising Bureau (IAB) has launched the first centralized database of specifications for ad units.

"We are very excited about what the launch of the Creative Specs Database means to the advertising industry," said Randall Rothenberg, president and CEO of the IAB.  "By creating this centralized resource we hope to simplify the ad delivery process for advertising agencies and marketers, allowing them to leverage the power of interactive media across multiple publishers with greater efficiency."

The database includes ad specifications from 88 major publishers, including Yahoo!, Fox Interactive and AOL, to name a few.

All participating publishers will be asked to update their specs within 72 hours of making changes to their site to ensure that the Creative Spec Database contains the most current data.