Agencies are organizations or entities that provide specific services or functions on behalf of others. They can operate in various sectors, such as advertising, public relations, or government. For example, a marketing agency helps businesses promote their products, while a government agency implements policies and regulations. Agencies often act as intermediaries, connecting clients with resources or expertise. They may represent individuals, companies, or even governments in various capacities. A travel agency, for instance, assists customers in planning and booking trips, while a talent agency helps artists find work in the entertainment industry.