Definition
The wall referred to in walled garden is largely about measurement. This is an unofficial designation for any digital platforms that keep user data from being shared with other media companies, advertisers or agencies, which need it to help measure unduplicated reach and frequency across all media. [1]
References
- Jack Neff, “Measurement glossary—what marketers and agencies need to know,” Ad Age, May 21,2025; https://adage.com/media/measurement/aa-measurement-glossary/