Interactive Advertising Bureau (IAB)

The Interactive Advertising Bureau (IAB) is the main trade body for digital advertising, founded in 1996 as online advertising emerged. Its members include publishers, ad-tech companies, agencies, and brands, and its role is to develop the shared standards and best practices that let a fragmented ecosystem interoperate.

Concretely, the IAB defines standard ad formats and dimensions, technical specifications for programmatic and video advertising, measurement and viewability guidelines, and privacy and consent frameworks (such as the widely used Transparency and Consent Framework). It also runs the IAB Tech Lab, which produces many of the technical standards the industry implements.

The IAB matters because so much of how digital advertising technically works is its handiwork. When an ad unit is a standard size, when programmatic systems speak a common protocol, when consent strings pass between platforms, when viewability is defined consistently — those shared rules trace back to IAB standards. For marketers, this is the infrastructure that makes campaigns portable across publishers and platforms rather than bespoke to each.

It also shapes the industry's response to change: privacy regulation, cookie deprecation, identity, and measurement reform are debated and standardized substantially through IAB working groups. Following IAB standards is how a brand or ad-tech vendor stays interoperable and current; ignoring them means building against the grain of the ecosystem.

The IAB is an industry body, not a regulator — its standards are voluntary norms the market adopts, not law. That's the key distinction from agencies like the FTC: the IAB sets how digital advertising technically operates and what good practice looks like, while regulators set what's legally required. In practice the two interact, as IAB frameworks (especially around privacy and consent) are designed partly to help the industry comply with laws like GDPR.

For a marketer, the takeaway is that IAB standards are the practical operating rules of digital media — adopt them to be interoperable and credible — while legal compliance is a separate, non-optional layer enforced by regulators.

The Interactive Advertising Bureau was founded in 1996 as the Internet Advertising Bureau to standardize the new medium of online advertising; it was later renamed the Interactive Advertising Bureau as digital media expanded beyond the web.

Etymology: source.

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