Amazon.com, Inc., is an American multinational technology company based in Seattle that focuses on e-commerce, cloud computing, digital streaming, and artificial intelligence. It is considered one of the Big Four technology companies, along with Google, Apple, and Facebook. It has been referred to as "one of the most influential economic and cultural forces in the world" as well as the world's most valuable brand.
Amazon is known for its disruption of well-established industries through technological innovation and mass scale. It is the world's largest online marketplace, AI assistant provider, live-streaming platform and cloud computing platform as measured by revenue and market capitalization.
United Parcel Service (shortened in initials as UPS; stylized in lowercase) is an American multinational package delivery and supply chain management company.
Along with the central package delivery operation, the UPS brand name (in a fashion similar to that of competitor FedEx) is used to denote many of its divisions and subsidiaries, including its cargo airline (UPS Airlines), freight-based trucking operation (UPS Freight, formerly Overnite Transportation), and its delivery drone airline (UPS Flight Forward). The global logistics company is headquartered in the U.S. city of Sandy Springs, Georgia, which is a part of the Greater Atlanta metropolitan area.
The Automatic Identification System (AIS) is an automatic tracking system used on ships for identifying and locating vessels to avoid collisions. Also port authorities use AIS to better control sea traffic.
Each vessel broadcasts its AIS messages via VHF channels (frequencies 161.975 MHz and 162.025 MHz) using a transceiver connected with a positioning system such as a GPS. Nearby vessels receive that signal and process it using special software
FedEx Corporation is an American multinational delivery services company headquartered in Memphis, Tennessee. The name "FedEx" is a syllabic abbreviation of the name of the company's original air division, Federal Express (now FedEx Express), which was used from 1973 until 2000. The company is known for its overnight shipping service and pioneering a system that could track packages and provide real-time updates on package location, a feature that has now been implemented by most other carrier services. FedEx is also one of the top contractors of the US government.
The United States Postal Service (USPS; also known as the Post Office, U.S. Mail, or Postal Service) is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the United States, including its insular areas and associated states. It is one of the few government agencies explicitly authorized by the United States Constitution.
The USPS traces its roots to 1775 during the Second Continental Congress, when Benjamin Franklin was appointed the first postmaster general. The Post Office Department was created in 1792 with the passage of the Postal Service Act. It was elevated to a cabinet-level department in 1872, and was transformed by the Postal Reorganization Act of 1970 into the United States Postal Service as an indep