Carroll Media Services, Inc.

Carroll Media Services, Inc. is a third-party audit and verification firm that has served the out-of-home advertising industry since 1993. The company independently confirms that out-of-home and digital out-of-home campaigns are posted correctly, giving advertisers, agencies and media owners objective proof-of-performance rather than relying on vendor self-reporting. Its field staff conducts audits, pre-rides and pre-verification surveys, photographing and documenting billboard, transit, place-based, point-of-care and in-store or retail media placements across markets.

The firm operates a network of roughly seventy trained field professionals covering seventy designated market areas throughout North America, including Puerto Rico, which lets it gather intelligence and verify installations on a national scale. Carroll Media Services also produces OutdoorAdTrak, a competitive tracking service that monitors national and regional outdoor advertising and maintains one of the largest and most current image databases of out-of-home creative. Clients use OutdoorAdTrak to study competitors' campaigns, review historical creative executions and inform their own planning.

The company positions itself as a neutral, data-driven partner focused on accuracy, accountability and measurement in a channel where physical placements can be difficult to verify remotely. By combining boots-on-the-ground fieldwork with a structured reporting and image-archiving system, Carroll Media Services supports blue-chip advertisers and their agencies in confirming that they receive the placements they purchased. Its long operating history and broad market coverage make it a specialized data and third-party verification resource within the out-of-home ecosystem rather than a media owner or general marketing firm.