Which of the following is an agency personnel, which is responsible for representing the interests of a client within the agency and for ensuring that all those working on the client's account are fully informed, working to deadline and to budget?

The account manager is the primary liaison between the client and the agency, responsible for representing client interests within the agency. They ensure all team members working on the account are properly informed, projects stay on deadline and within budget, and client expectations are met. Sales managers focus on revenue generation, while creative and media directors have specialized roles in their respective domains.