Definition: IAB [Internet Advertising Bureau]

IAB stands for the Interactive Advertising Bureau (or Internet Advertising Bureau in the UK). They are a trade body for online advertising who have helped define online advertising since 1996.

Most notably they designated a set of standard ad sizes which helped display marketing take off by reducing technical issues between publishers and advertisers. These standard ad sizes (728×90, 300×250 etc) are still in use today.

The IAB also came up with the VAST (Video Ad Serving Template) standards, which made it possible to serve ads across many sites.



IAB Definition

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