To connect brands to their ends, no to means clients SERVICES People, Process and Platform working in harmony: Our commitment to executing modern precision marketing is underpinned by Omni. Omni is the industry’s first-ever Marketing Operating System, built to unlock planning, strategy and creative power from across all Omnicom agencies. People, Process and Platform working in harmony: Our commitment to executing modern precision marketing is underpinned by Omni. Omni is the industry’s first-ever Marketing Operating System, built to unlock planning, strategy and creative power from across all Omnicom agencies.