Marketing is the act of satisfying and retaining customers. It is one of the primary components of business management and commerce.

The Agricultural Marketing Service (AMS) is an agency of the United States Department of Agriculture; it maintains programs in five commodity areas: cotton and tobacco; dairy; fruit and vegetable; livestock and seed; and poultry. These programs provide testing, standardization, grading and market news services for those commodities, and oversee marketing agreements and orders, administer research and promotion programs, and purchase commodities for federal food programs. The AMS enforces certain federal laws such as the Perishable Agricultural Commodities Act and the Federal Seed Act. The AMS budget is $1.2 billion. It is headquartered in the Jamie L. Whitten Building in Washington, D.C.