Moments that shaped the future
It all started in 1975 when Bill Gates and Paul Allen opened a small office in Albuquerque. Since then, Microsoft has released groundbreaking products, including Windows, Office, and Xbox, that democratized computing and changed the world. Delve into the milestones and big moments that led Microsoft to becoming one of the largest and most influential tech companies in the world.
All images are courtesy of Microsoft Archives.
1975

Bill Gates and Paul Allen found Microsoft in Albuquerque, New Mexico. At the time, Gates was 19 and Allen was 22. Gates and Allen develop their version of the BASIC (Beginner’s All-Purpose Symbolic Code) programming language for the Altair 8800, the first home computer and the machine that sparked the microcomputer revolution. Their goal was to develop and sell BASIC interpreters for the Altair 8800, which would allow users to write their own software for the computer. This first product sold for $350 and was distributed on a cassette tape. Gates uses the name "Micro-soft" in a letter to Allen to refer to their partnership.
1976
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Microsoft becomes the official name of the partnership and is registered with the Office of the Secretary of State of New Mexico. Bill Gates and Paul Allen lease their first office in the Two Park Central Building at 300 San Mateo Blvd. NE Suite 819 in Albuquerque.
1977
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Bill Gates and Paul Allen make their partnership official and Gates takes an extended leave from Harvard to work with Allen and half a dozen other programmers at Microsoft's headquarters near the Altair manufacturing plant in Albuquerque, New Mexico, where the company was based from 1976 to 1978. By the end of the year, Microsoft is selling more than $1 million of software annually.
1978

Notable hires include Robert "Bob" O'Rear (right), who helped launch Microsoft UK; and Bill Neukom (left), principal legal counsel for Microsoft.
1980
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Bill Gates, Paul Allen, and Bob O’Rear ink a legendary contract with IBM to develop the operating system MS-DOS for their upcoming personal computer line. MS-DOS becomes the basis for Microsoft’s rapid expansion. That non-exclusive agreement led Bob to write MS-DOS with Tim Patterson, which the IBM operating system and the bargaining chip with which Microsoft gains market share with other original equipment manufacturers.
1981
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Microsoft officially incorporates and begins leasing the Northup Building in Bellevue, Washington, conveniently located next to Burgermaster—which was on everyone's speed dial. You could call them to order a burger, walk next door, and your order would be ready. That was a novelty back in the 1980s. That same year, Microsoft enters the operating systems business. The release of MS-DOS, an acronym for Microsoft Disk Operating System, is introduced in IBM's personal computer, which also includes BASIC, COBOL, Pascal, and other Microsoft products. By the end of the year, Microsoft's sales break $17 million and the company employs 129 people.
1982
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MS-DOS 1.25 released. This version expanded MS-DOS compatibility beyond IBM to other PC manufacturers, contributing to the rise of the "IBM PC compatible" ecosystem. Operating Systems Division photo, on the steps of the Northup Building. Left to right: (Top Row) Gordon Letwin, Mark Bebie, Irvin Shizgal, Marc MacDonald, Greg Post, Hans Spiller, David Basin, Bob Powell; (Middle Row) Aaron Reynolds, Eric Evans, Bob Scheulen, Ross Garmoe, Mike Householder, Anthony Short, Mark Nitzberg, Vic Heller; (Bottom Row) Henry Burgess, Nancy Cedar (Panners-Scheulen), Ellen Aycock-Wright, Paul Butzi, Andy Padawer, Barry Shaw, Alan Whitney.
1983
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Word for MS-DOS 1.0 is released in the spring of 1983 and Microsoft announces Multi-Tool Word, which later becomes Microsoft Word.
Photo from the 1983 October issue of PC World Magazine featuring the demonstration floppy disk introducing Word 1.0 for MS-DOS. The Word 1.0 software box and floppy disks are also shown.
1984

Notable new hires this year include Notable new hires include Charles Stevens (top-left), a corporate vice president; Rich Macintosh (top-right), general manager of Microsoft Canada; Marty Taucher (bottom-left), who was director of network communications for Microsoft Network; and Joe Vetter (bottom-right), who held management positions in OEM, sales, and consulting.
1985
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Microsoft introduces the U.S. to the Windows line with the launch the first version of Windows, Windows 1.0. It's released as a graphical extension for MS-DOS with user-friendly icons. Windows 1.0 included Microsoft DOS Executive, Calculator, Calendar, Cardfile, Clipboard, Clock, Control Panel, Notepad, Print Spooler, Reversi, Terminal, Windows Paint, and Windows Write. By the time Microsoft ended its support for Windows 1.0 on December 31, 2001, it was the longest-supported operating system out of all versions of Windows.
1986
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In March, Microsoft makes an IPO. The stock goes public at $21 a share and reaches to $28 by end of the day, bringing in $61 million. On a product standpoint, Microsoft releases the Exchange Server. This is designed as a messaging and collaboration server that provides email, calendar, and contact management.
1987
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Microsoft introduces the U.S. to the Windows line with the launch the first version of Windows, Windows 1.0. It's released as a graphical extension for MS-DOS with user-friendly icons. Windows 1.0 included Microsoft DOS Executive, Calculator, Calendar, Cardfile, Clipboard, Clock, Control Panel, Notepad, Print Spooler, Reversi, Terminal, Windows Paint, and Windows Write. By the time Microsoft ended its support for Windows 1.0 on December 31, 2001, it was the longest-supported operating system out of all versions of Windows.
1988

Notable hires include Dave Cutler, a luminary among engineers, who was a Senior Technical Fellow at Microsoft, and Mark Lucovsky (pictured), one of the original engineers Culter recruited to design and build Windows NT. Phil Spencer, the CEO of Microsoft Gaming, also started in 1988 as a programming intern.
1989
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Microsoft packages its core productivity applications—Word, Excel, and PowerPoint—into a single offering and introduces first version of the Office suite. The suite initially launches for the Macintosh with the Windows version to come in 1990. By integrating these applications into one package under the Office brand, Microsoft establishes its dominance in office productivity software, as users appreciate the consistency and compatibility among tools.
1990
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Windows 3.0 launches and gains widespread adoption, making the Windows platform a household name.
1991
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In November, the new Microsoft® Windows® logo, a colorful window with trailing rectangular tails in the shape of a fluttering flag, is announced at Fall/COMDEX '91. By the end of the year, sales exceed $1.8 billion and the company employs 8,226 people.
1992

Notable hires include P. Anandan (top-left), Kurt DelBene (top-middle-left), George Heidorn (top-middle-right), Karen Jensen (top-right), Satya Nadella, Harry Shum (bottom-left), Rick Szeliski (bottom-middle), and Jason Zander (bottom-right).
1979
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With fewer than 15 employees, Microsoft recognizes the need to recruit top programmers and leases offices on the eighth floor of the Old Bank Building in downtown Bellevue, Washingon, which sets the stage for innovation and growth. At the same time, Microsft advertises in Byte and other publications about technology innovations including the BASIC Compiler.
1993
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Windows NT, short for "New Technology," launches on July 27. This is Microsoft’s first operating system to support 32-bit processing and is aimed at business users. It enhances security, stability, and performance compared to the DOS-based versions of Windows. Plug and Play architecture is announced with end-users in mind.
1994
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Microsoft BackOffice, a suite of server products designed for small to medium-sized businesses, launches. It provides a complete solution for networking, email, and web services, and it includes Windows NT Server, Exchange Server, SQL Server, and Internet Information Server.
1995
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Microsoft launches Windows 95, the consumer focused version of Windows. This launch helps define the future of personal computing. Users are introduced to the Start menu and taskbar, and this cements Windows'’ dominance in the OS market. The release is a major event and turns Windows into an essential platform for personal and professional users.
1996
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Microsoft Internet Explorer 2.0 for Windows 95 is available in 22 languages, bringing the browser to the largest international audience of any internet client software. Year-end sales total $8.57 billion and the company employs 20,561 people.
1997
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Microsoft Internet Explorer 2.0 for Windows 95 is available in 22 languages, bringing the browser to the largest international audience of any internet client software. Year-end sales total $8.57 billion and the company employs 20,561 people.
1998
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1998 marks a changing of the guard. Bill Gates names Steve Ballmer as president, and Bill continues as CEO. Ballmer, a close friend of Gates from their student days at Harvard University, joined Microsoft in 1980, five years after its founding. Before becoming president, Ballmer was executive vice president of sales and support.
1999
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Office 2000 launches in 1999, introducing several notable features. Highlights include web integration and HTML support and enhanced collaboration with Office Server Extensions.
2000
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Steve Ballmer is appointed CEO of Microsoft in January, 2000. Bill steps down as CEO and remains actively involved as Chairman and Chief Software Architect.
2001
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Windows XP and Office XP launch and become known for stability and user-friendly interfaces. Windows XP becomes one of the best-selling OS versions and its release includes the Windows XP Tablet PC edition for OEMs and developers, which evolved to become the Surface.
2002
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Microsoft launches the .NET Initiative, which provides a solid foundation for increasing business connectivity and efficiency. It provides the platform for powering connected applications, networks, and Web Services. By the end of the year, revenue reaches $28.37 billion.
2003

Notable hires include Kathleen Hogan, who became executive vice president and chief human resources officer.
2004
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The release of "Halo 2" marks the single biggest event in entertainment history up to this point. The game tops $125 million in the first day and sells more than 5 million copies in the first month.
2005
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After four engineers from Microsoft's DirectX team—Kevin Bachus, Seamus Blackley, Ted Hase, and DirectX team leader Otto Berkes—envision how Microsoft can compete against the PlayStation 2, Microsoft launches Xbox 360. This next-generation video game platform is optimized for high-definition entertainment and online play.
2006
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Microsoft introduces Encarta Premium, which includes interactive features and a partnership with Encyclopaedia Britannica to give more credibility and depth to Encarta's content.
2007
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With the launches of new versions of flagship Microsoft® Windows® and Office products, including the Windows Vista operating system (code name "Longhorn") and the 2007 Microsoft Office system, 2007 saw the rollout of the biggest wave of business software in Microsoft's history. Key figures in the Vista launch include Jim Allchin, Brian Valentine, and Amitabh Srivastava.
2008
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Windows Azure, known as "Project Red Dog," is first introduced at the Professional Developers Conference by Ray Ozzie, Microsoft's chief software architect. This platform is an industry-leading move to help developers build the next generation of applications and deliver new experiences across the PC, Web, and phone.
2009
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Microsoft unveils Bing, a search engine that replaces the Live Search product. Bing is designed as a decision engine—a faster way to make informed choices on purchases, travel, healthcare and finding local businesses. It crawls, analyzes, and indexes billions of webpages and other Internet content and relates all of that to keywords and phrases used by searchers.
2010
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Kinect for Xbox 360 launched on November 4, 2010 in North America, followed by releases in other regions later that month. It was a motion-sensing device that enabled players to interact with games using body movements and voice commands, without the need for a controller.
2011
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Microsoft bets big on the cloud for businesses and consumers. In 2010, it launches Office 365, a new service where Office meets the cloud. This subscription-based model and cloud-based applications boost the company's shift toward cloud services.
2012
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After more than 1.24 billion hours of testing, Microsoft launches Windows 8. This operating system features a new, tile-based interface designed for touchscreen devices. Microsoft also announces a new family of PCs for Windows: Surface and Surface Pro tablets. For fiscal year 2012, revenue grows to a record $73.7 billion.
2013
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Xbox One, an all-in-one entertainment system officially hits the market, putting the consumer at the center of games, TV, movies, music, sports, and Skype. This is the successor to Xbox 360 and the third console in the Xbox series.
2014
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Three generations of Microsoft CEOs celebrate as Steve Ballmer passes the baton to Satya Nadella. Satya began working at Microsoft in 1992 and ushered in an era of openness and innovation for the company. Satya emphasizes a “mobile-first, cloud-first” strategy to guide Microsoft’s transformation within cloud and AI.
The same year, Microsoft introduces Cortana, a digital personal assistant built into Windows Phone 8.1.
2015
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Windows 10 launches as a service that unites user experiences across devices and Office 2016 launches as part of the bold mobile-first, cloud-first strategy.
2016

On November 2, 2016, Kirk Koenigsbauer, then Corporate Vice President of Microsoft Office, officially unveiled Microsoft Teams during a special event in New York City. This introduction marked Microsoft's entry into the competitive team collaboration space, positioning Teams as a direct competitor to Slack and other workplace communication tools.
2017
Office 365 gets a worldwide rollout: more than 100 million people use it commercially and more than 27 million use it on home and personal devices.
2018
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Microsoft mourns the passing of co-founder Paul Allen, who died at 65 from complications of non-Hodgkin's lymphoma. Allen was a renowned philanthropist and business leader who played a huge role in how the world uses technology. In a statement, CEO Satya Nadella says, "In his own quiet and persistent way, he created magical products, experiences and institutions, and in doing so, he changed the world."
2019

The great giving machine: driven to make an impact, employees turn giving into a way of lifeIn 2019, Microsoft employees in the United States volunteered 825,000 hours for nonprofits. US-based Microsoft employees and their company match raised $181 million, including more than $20 million of volunteering match dollars that supported 23,5000 nonprofits and schools in 2019.
2020
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Microsoft introduces Microsoft 365—a rebrand and expansion on theOffice 365 suite. This product brings together Office 365 with advanced AI-driven features across apps like Word, Excel, and Outlook; Windows 10; and Enterprise Mobility + Security.
2021
Microsoft introduces Azure OpenAI Service, bringing GPT-3 to more developers. By this point, Microsoft is using GPT-3 to power GitHub’s Copilot tool that helps developers write code for them. Microsoft generates $168 billion in revenue.
2022

Microsoft's Brad Smith announces plans to acquire Activision Blizzard, Inc., a leader in game development and an interactive entertainment content publisher. The acquisition, valued at $68.7 billion, accelerates growth in gaming across mobile, PC, console, and cloud, and brings the joy of gaming to more people around the world.
2023
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Microsoft enters a new era of AI. After making coding more efficient with GitHub, transforming productivity at work with Microsoft 365, and redefining search with Bing and Edge, Microsoft announces Copilot. The technology is marketed as an everyday AI companion.
2024
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Mustafa Suleyman and Karén Simonyan join Microsoft to form a new organization called Microsoft AI. This program focuses on advancing Copilot and other consumer AI products and research.