UPS (United Parcel Service) is a company that provides package delivery services and supply chain management solutions. It operates through three segments: U.S. Domestic Package, International Package, and Supply Chain Solutions. The U.S. Domestic Package segment offers time-definite delivery of letters, documents, and small packages. The International Package segment focuses on small package operations and guaranteed day- and time-definite shipping services. The Supply Chain Solutions segment delivers forwarding, truckload brokerage, logistics, and distribution services.