COMMB, the Canadian Out-of-Home Marketing & Measurement Bureau, is a national not-for-profit organization dedicated to the Canadian Out-of-Home (OOH) industry. With over 50 years of experience, COMMB focuses on innovative measurement methodologies, marketing support, and educational services for its members, which include advertisers, advertising agencies, OOH companies, and programmatic tech-stacks.

The organization offers a range of services, including measurement for various OOH media formats like billboards and transit shelters, planning tools for campaign demographics, and marketing support to promote the value of OOH advertising. COMMB also provides educational services to enhance industry knowledge and employs research analysts to develop and refine measurement methodologies. Membership with COMMB offers benefits such as market credibility, a competitive edge, and shared research costs, making it a vital resource for stakeholders in the OOH advertising space.