Data clean rooms have become core infrastructure for Retail and Commerce Media. They let retailers, brands and agencies combine first-party data to plan, activate and measure campaigns, without handing raw customer data to one another.
Two recent industry guides tackle the topic from different angles. IAB US asks why you need a clean room and what you can do with one. IAB Europe asks what a clean room actually is and how to choose the right one. Read together, they cover the full journey from business case to buying decision.
The IAB US guide builds the business case. It explains why clean rooms matter as third-party identifiers fade and retail media networks compete on the quality of their shopper data.
Its core contribution is the use cases: how clean rooms support audience planning, activation, measurement and closed-loop attribution. For a marketer or retail media leader who still needs to justify the investment internally, this is the place to start.
identifiers fade and retail media networks compete on the quality of their shopper data.
Its core contribution is the use cases: how clean rooms support audience planning, activation, measurement and closed-loop attribution. For a marketer or retail media leader who still needs to justify the investment internally, this is the place to start.
The IAB Europe guide starts from the fundamentals: what a data clean room is, how it works and what separates one solution from another. It then gives practical criteria for evaluating and selecting a provider.
It also debunks five common misconceptions about clean rooms. That myth-busting matters, because unrealistic expectations are one of the fastest ways to derail a clean room project. For teams already convinced of the need and now scoping or procuring a solution, this guide is the practical companion.
The two guides map onto the stages of adoption. IAB US speaks to decision-makers asking whether clean rooms are worth it; IAB Europe speaks to the teams who then have to pick and implement one.
They also balance each other. IAB US shows the opportunity; IAB Europe keeps expectations grounded by addressing what clean rooms can and cannot do. Reading one without the other risks either a strong business case with a poorly chosen tool, or a well-informed selection with no clear goals.
The regional lens adds value too. The European guide naturally reflects a market shaped by GDPR and privacy-by-design, while the US guide reflects a market where retail media networks have scaled quickly. Together they give a useful transatlantic view.
