The IAB Tech Lab announced finalization of its guidelines for advertisers and publishers on data clean room use. The guidance includes a glossary of terms, use cases, and general capabilities and limitations data clean room users should bear in mind. The IAB said the guidance will allow advertisers and publishers to "assess that a clean room product actually provides privacy preservation guarantees." Editor's note: The IAPP's Joe Duball explored the privacy impacts stemming from increased use of clean rooms.