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The digital marketing glossary > I > What is IAB ad units definition?

What is IAB ad units definition ?

IAB standard ad units are a range of ad formats promoted by the IAB to facilitate online and mobile advertising.

The adoption of ad standards is particularly important because a display campaign can be delivered on several hundreds or thousands of publisher’s websites by the means of an ad network.

Current and potential standard ad formats are reviewed on bi-annual basis by the IAB’s Ad Sizes Working Group. The last update and big change was in february 2012.

IAB ad units are mainly defined by:

- initial dimensions in pixels
- maximum expanded dimensions
- max initial file load size
- max additional initial file load size
- maximum animation length

The IAB ad unit portfolio:

Some ad unit definitions:

Published on Sunday 7 October 2012 (Authors)