Microsoft Office

Microsoft Corporation (, abbreviated as MS) is an American multinational technology company with headquarters in Redmond, Washington. It develops, manufactures, licenses, supports and sells computer software, consumer electronics, personal computers, and related services. Its best known software products are the Microsoft Windows line of operating systems, the Microsoft Office suite, and the Internet Explorer and Edge web browsers.

The Hewlett-Packard Company (commonly referred to as HP, and stylized as hp) or Hewlett-Packard ( HEW-lit PAK-…ôrd) was an American multinational information technology company headquartered in Palo Alto, California. It developed and provided a wide variety of hardware components as well as software and related services to consumers, small- and medium-sized businesses (SMBs) and large enterprises, including customers in the government, health and education sectors. The company was founded in a one-car garage in Palo Alto by Bill Hewlett and David Packard, and initially produced a line of electronic test equipment.

Apple Inc. is an American multinational technology company headquartered in Cupertino, California, that designs, develops, and sells consumer electronics, computer software, and online services. The company's hardware products include the iPhone smartphone, the iPad tablet computer, the Mac personal computer, the iPod portable media player, the Apple Watch smartwatch, the Apple TV digital media player, and the HomePod smart speaker.

International Business Machines Corporation (IBM) is an American multinational information technology company headquartered in Armonk, New York, United States, with operations in over 170 countries. The company began in 1911 as the Computing-Tabulating-Recording Company (CTR) and was renamed "International Business Machines" in 1924. IBM manufactures and markets computer hardware, middleware and software, and provides hosting and consulting services in areas ranging from mainframe computers to nanotechnology.

DocuSign is a San Francisco based company that provides electronic signature technology and digital transaction management services for facilitating electronic exchanges of contracts and signed documents. DocuSign’s features include authentication services, user identity management and workflow automation.

Yahoo! is an American web services provider headquartered in Sunnyvale, California, and owned by Verizon Media. The original Yahoo! company was founded by Jerry Yang and David Filo in January 1994 and was incorporated on March 2, 1995. Yahoo was one of the pioneers of the early Internet era in the 1990s.