1972–1985: Founding and
Bill Gates on October 19, 1981, after signing a pivotal contract with
IBM Childhood friends
Bill Gates and
Paul Allen sought to make a business using their skills in
computer programming. In 1972, they founded
Traf-O-Data, which sold a rudimentary computer to track and analyze automobile traffic data. The January 1975 issue of
Popular Electronics featured
Micro Instrumentation and Telemetry Systems's (MITS)
Altair 8800 microcomputer, which inspired Allen to suggest that they could program a
BASIC interpreter for the device. Gates called MITS and claimed that he had a working interpreter, and MITS requested a demonstration. Allen worked on a simulator for the Altair while Gates developed the interpreter, and it worked flawlessly when they demonstrated it to MITS in March 1975 in
Albuquerque, New Mexico. MITS agreed to distribute it, marketing it as
Altair BASIC. and Allen suggested the name "Micro-Soft", short for micro-computer software. In August 1977, the company formed an agreement with ASCII Magazine in Japan, resulting in its first international office of
ASCII Microsoft. Microsoft moved its headquarters to
Bellevue, Washington, in January 1979. but it was
MS-DOS that solidified the company's dominance.
IBM awarded a contract to Microsoft in November 1980 to provide a version of the
CP/M OS to be used in the
IBM Personal Computer (IBM PC). For this deal, Microsoft purchased a CP/M clone called
86-DOS from
Seattle Computer Products which it branded as MS-DOS, although IBM rebranded it to
IBM PC DOS. Microsoft retained ownership of MS-DOS following the release of the IBM PC in August 1981. IBM had copyrighted the IBM PC
BIOS, so other companies had to reverse engineer it for non-IBM hardware to run as
IBM PC compatibles, but no such restriction applied to the operating systems. The company expanded into new markets with the release of the
Microsoft Mouse in 1983, as well as with a publishing division named
Microsoft Press.
1985–1994: Windows and Office was released on November 20, 1985, as the first version of the Windows line. Microsoft released
Windows 1.0 on November 20, 1985, as a graphical extension for
MS-DOS, Microsoft moved its headquarters from Bellevue to
Redmond, Washington, on February 26, 1986, and went public with an
initial public offering (IPO) at the NASDAQ exchange on March 13, with the resulting rise in stock making an estimated four billionaires and 12,000 millionaires from Microsoft employees. Microsoft released its version of OS/2 to original equipment manufacturers (OEMs) on April 2, 1987. Meanwhile, the company was at work on Microsoft
Windows NT, which was heavily based on its copy of the OS/2 code. It shipped on July 21, 1993, with a new modular
kernel and the
32-bit Win32 application programming interface (API), making it easier to port from
16-bit (MS-DOS-based) Windows. Microsoft informed IBM of Windows NT, and the OS/2 partnership deteriorated. In 1990, Microsoft introduced the
Microsoft Office suite which bundled separate applications such as
Microsoft Word and
Microsoft Excel. and both Office and Windows became dominant in their respective areas. On July 27, 1994, the
Department of Justice's Antitrust Division filed a competitive impact statement stating that since 1988, Microsoft had increasingly induced
OEMs to pay royalties under a per-processor license for microprocessors in their computers regardless of whether or not a Microsoft product was used.
1995–2007: Foray into the Web, Windows 95, Windows XP, and Xbox , a version of the operating system meant for personal digital assistants and other tiny computers, shown here on the
HP 300LX. Following Bill Gates's internal "Internet Tidal Wave memo" on May 26, 1995, Microsoft began to redefine its offerings and expand its product line into
computer networking and the
World Wide Web. With a few exceptions of new companies, like
Netscape, Microsoft was the only major and established company that acted fast enough to be a part of the World Wide Web practically from the start. Other companies like
Borland,
WordPerfect,
Novell,
IBM and
Lotus, being much slower to adapt to the new situation, would give Microsoft market dominance. The company released
Windows 95 on August 24, 1995, featuring
pre-emptive multitasking, a completely new user interface with a novel
start button, and 32-bit compatibility; similar to NT, it provided the Win32 API. Windows 95 came bundled with the
online service MSN, which was intended to be a competitor to services such as
CompuServe and
AOL. The
web browser Internet Explorer was not bundled with the retail release of Windows 95, and was instead included in the later
Microsoft Plus! pack, as well as with OEM releases of Windows 95. Backed by a high-profile marketing campaign and what
The New York Times called "the splashiest, most frenzied, most expensive introduction of a computer product in the industry's history," Windows 95 quickly became a success. Branching out into new markets in 1996, Microsoft and
General Electric's
NBC unit created a new
24/7 cable news channel,
MSNBC. Microsoft created
Windows CE 1.0, a new OS designed for devices with low memory and other constraints, such as
personal digital assistants. In October 1997, the Justice Department filed a motion in the Federal
District Court, stating that Microsoft violated an agreement signed in 1994 and asked the court to stop the bundling of
Internet Explorer with Windows. On October 25, 2001, Microsoft released
Windows XP, unifying the mainstream and NT lines of OS under the NT codebase. The company released the
Xbox later that year, entering the
video game console market dominated by
Sony and
Nintendo. In March 2004 the
European Union brought
antitrust legal action against the company, citing it abused its dominance with the Windows OS, resulting in a judgment of €497 million ($613 million) and requiring Microsoft to produce new versions of Windows XP without
Windows Media Player: Windows XP Home Edition N and Windows XP Professional N. In November 2005, the company's second video game console, the
Xbox 360, was released. Increasingly present in the hardware business following Xbox, Microsoft 2006 released the
Zune series of digital media players, a successor of its previous software platform
Portable Media Center.
2007–2011: Microsoft Azure, Windows Vista, Windows 7, and Microsoft Stores at the
MIX event in 2008. In an interview about his management style in 2005, he mentioned that his first priority was to get the people he delegates to in order. Ballmer also emphasized the need to continue pursuing new technologies even if initial attempts fail, citing the original attempts with Windows as an example. , which has imposed several fines on Microsoft Released in January 2007, the next version of Windows,
Vista, focused on features, security and a redesigned user interface dubbed
Aero.
Microsoft Office 2007, released at the same time, featured a "
Ribbon" user interface which was a significant departure from its predecessors. Relatively strong sales of both products helped to produce a record profit in 2007. The European Union imposed another fine of €899 million ($1.4 billion) for Microsoft's lack of compliance with the March 2004 judgment on February 27, 2008, saying that the company charged rivals unreasonable prices for key information about its
workgroup and
backoffice servers. Microsoft stated that it was in compliance and that "these fines are about the past issues that have been resolved". Gates retired from his role as Chief Software Architect on June 27, 2008, a decision announced in June 2006, while retaining other positions related to the company in addition to being an advisor for the company on key projects.
Azure Services Platform, the company's entry into the
cloud computing market for Windows, launched on October 27, 2008. On February 12, 2009, Microsoft announced its intent to open a chain of Microsoft-branded retail stores, and on October 22, 2009, the first retail
Microsoft Store opened in
Scottsdale, Arizona; the same day
Windows 7 was officially released to the public. As the smartphone industry boomed in the late 2000s, Microsoft had struggled to keep up with its rivals in providing a modern smartphone operating system, falling behind
Apple and
Google-sponsored
Android in the United States. As a result, in 2010 Microsoft revamped its aging flagship mobile operating system,
Windows Mobile, replacing it with the new
Windows Phone OS that was released in October that year. It used a new user interface design language, codenamed "Metro", which prominently used simple shapes, typography, and iconography, utilizing the concept of minimalism. Microsoft implemented a new strategy for the software industry, providing a consistent user experience across all smartphones using the Windows Phone OS. It launched an alliance with
Nokia in 2011 and Microsoft worked closely with the company to co-develop Windows Phone, but remained partners with long-time Windows Mobile
OEM HTC. Microsoft is a founding member of the
Open Networking Foundation started on March 23, 2011. This nonprofit organization is focused on providing support for a
cloud computing initiative called Software-Defined Networking. The initiative is meant to speed innovation through simple software changes in telecommunications networks, wireless networks, data centers, and other networking areas.
2011–2014: Windows 8/8.1, Xbox One, Outlook.com, and Surface devices , part of the
Surface series of
2-in-1 laptops by Microsoft Following the release of
Windows Phone, Microsoft undertook a gradual
rebranding of its product range throughout 2011 and 2012, with the corporation's logos, products, services, and websites adopting the principles and concepts of the
Metro design language. Microsoft unveiled
Windows 8, an operating system designed to power both personal computers and
tablet computers, in Taipei in June 2011. Also in 2011, Microsoft saw its largest acquisition by taking over
Skype. The
Surface was unveiled in June 2012, becoming the first computer in the company's history to have its hardware made by Microsoft. On June 25, Microsoft paid US$1.2 billion to buy the social network
Yammer. On July 31, it launched the
Outlook.com webmail service to compete with
Gmail. On September 4, 2012, Microsoft released
Windows Server 2012. In July 2012, Microsoft sold its 50% stake in MSNBC, which it had run as a joint venture with NBC since 1996. In October 2012, Microsoft launched Windows 8,
Microsoft Surface, and
Windows Phone 8. To cope with the potential for an increase in demand for products and services, Microsoft opened a number of "holiday stores" across the U.S. to complement the increasing number of "bricks-and-mortar" Microsoft Stores that opened in 2012. On March 29, 2013, Microsoft launched a Patent Tracker. console, released in 2013 In August 2012, the
New York City Police Department announced a partnership with Microsoft for the development of the
Domain Awareness System which is used for
police surveillance in New York City. The
Kinect, a motion-sensing input device made by Microsoft and designed as a
video game controller, first introduced in November 2010, was upgraded for the 2013 release of the
Xbox One video game console. On July 19, 2013, Microsoft stocks suffered its biggest one-day percentage sell-off since the year 2000, after its fourth-quarter report raised concerns among investors on the poor showings of both Windows 8 and the Surface tablet. Microsoft suffered a loss of more than US$32 billion. In line with the maturing PC business, in July 2013, Microsoft announced that it would reorganize into four new business divisions: Operating Systems, Apps, Cloud, and Devices. All previous divisions were dissolved into new divisions without any workforce cuts. On September 3, 2013, Microsoft agreed to buy
Nokia's mobile unit for $7 billion, following
Amy Hood taking the role of CFO.
2014–2020: Windows 10, Microsoft Edge, and HoloLens succeeded
Steve Ballmer as the
CEO of Microsoft in February 2014. On February 4, 2014,
Steve Ballmer stepped down as
CEO of Microsoft and was succeeded by
Satya Nadella, who previously led Microsoft's Cloud and Enterprise division. On the same day,
John W. Thompson took on the role of chairman, in place of Bill Gates, who continued to participate as a technology advisor. Thompson became the second chairman in Microsoft's history. On April 25, 2014, Microsoft acquired Nokia Devices and Services for $7.2 billion. This new subsidiary was renamed Microsoft Mobile Oy. On September 15, 2014, Microsoft acquired the video game development company
Mojang, best known for
Minecraft, for $2.5 billion. Since Nadella became CEO, the company has changed focus towards cloud computing. On January 21, 2015, Microsoft announced the release of its first
interactive whiteboard, named
Surface Hub. On July 29, 2015,
Windows 10 was released, with its server sibling,
Windows Server 2016, released in September 2016. Microsoft's share of the U.S. smartphone market in January 2016 was 2.7%. During the summer of 2015 the company lost $7.6 billion related to its mobile-phone business, firing 7,800 employees. In 2015, the construction of a data center in
Mecklenburg County, Virginia, led to the destruction of a historic
African American cemetery despite archeological recommendations for preservation. On March 1, 2016, Microsoft announced the merger of its PC and Xbox divisions, with
Phil Spencer announcing that Universal Windows Platform (UWP) apps would be the focus for Microsoft's gaming in the future. Microsoft also aqcuired
LinkedIn in 2016. On January 24, 2017, Microsoft showcased Intune for Education at the
BETT 2017 education technology conference in
London. Intune for Education is a new cloud-based application and device management service for the education sector. In May 2016, the company announced it was laying off 1,850 workers, and taking an impairment and restructuring charge of $950 million. In November 2016, Microsoft joined the
Linux Foundation as a Platinum member during Microsoft's Connect(); developer event in New York. The cost of each Platinum membership is US$500,000 per year. Some analysts had deemed this unthinkable ten years prior, however, as in 2001 then-CEO Steve Ballmer called Linux "cancer". , the
Microsoft Lumia 535 and the
Nokia Lumia 530, which all run on one of the now-discontinued
Windows Phone operating systems In January 2018, Microsoft patched
Windows 10 to account for CPU problems related to
Intel's Meltdown security breach. The patch led to issues with the
Microsoft Azure virtual machines reliant on Intel's CPU architecture. On January 12, Microsoft released
PowerShell Core 6.0 for the
macOS and
Linux operating systems. In February 2018, Microsoft ceased notification support for its
Windows Phone devices which effectively ended firmware updates for the discontinued devices. On July 10, 2018, Microsoft revealed the
Surface Go platform to the public. Later in the month, it converted
Microsoft Teams to
gratis. In September 2018, Microsoft discontinued
Skype Classic. In November 2018, Microsoft agreed to supply 100,000
Microsoft HoloLens headsets to the
United States military in order to "increase lethality by enhancing the ability to detect, decide and engage before the enemy." In November 2018, Microsoft introduced Azure Multi-Factor Authentication for Microsoft Azure. In December 2018, Microsoft announced
Project Mu, an open source release of the
Unified Extensible Firmware Interface (UEFI) core used in
Microsoft Surface and
Hyper-V products. The project promotes the idea of
Firmware as a Service. In the same month, Microsoft announced the open source implementation of
Windows Forms and the
Windows Presentation Foundation (WPF) which will allow for further movement of the company toward the transparent release of key frameworks used in developing Windows desktop applications and software. December also saw the company discontinue the
Microsoft Edge [Legacy] browser project in favor of the
"New Edge" browser project, featuring a
Chromium based backend.
2020–present: Acquisitions, Xbox Series X/S, and Windows 11 On August 5, 2020, Microsoft stopped its
xCloud game streaming test for
iOS devices.
Apple imposed a strict limit on "
remote desktop clients" which means applications are only allowed to connect to a user-owned host device or gaming console owned by the user. On September 21, 2020, Microsoft announced its intent to acquire video game company
ZeniMax Media, the parent company of
Bethesda Softworks. On March 9, 2021, the acquisition was finalized at $8.1 billion and ZeniMax Media became part of Microsoft's Xbox Game Studios division. On November 10, 2020, Microsoft released the
Xbox Series X and Xbox Series S video game consoles. In February 2021, Microsoft released
Azure Quantum for public preview. The public cloud computing platform provides access to quantum software and quantum hardware including
trapped ion,
neutral atom, and
superconducting systems. In April 2021, Microsoft announced it would buy
Nuance Communications for approximately $16 billion, completing the acquisition in March 2022. In 2021, in part due to the strong quarterly earnings spurred by the
COVID-19 pandemic, Microsoft's valuation came to nearly $2 trillion. The increased necessity for
remote work and
distance education drove demand for
cloud computing and grew the company's gaming sales. On June 24, 2021, Microsoft announced
Windows 11 during a livestreamed event. The announcement came with confusion after Microsoft announced Windows 10 would be the last version of the operating system. It was released to the general public on October 5, 2021. In September 2021, it was announced that the company had acquired
TakeLessons, an online platform that connects students and tutors in numerous subjects. The acquisition positioned Microsoft to grow its presence in the market of providing online education to large numbers of people. In the same month, Microsoft acquired Australia-based video editing software company
Clipchamp. In October 2021, Microsoft announced that it began rolling out end-to-end encryption (E2EE) support for Microsoft Teams calls in order to secure business communication while using video conferencing software. On October 7, Microsoft acquired Ally.io, a software service that measures companies' progress against
OKRs, planning to incorporate it into its Viva family of employee experience products. On January 18, 2022, Microsoft announced the acquisition of American video game developer and
holding company Activision Blizzard in an all-cash deal worth $68.7 billion, which was completed in 2023. Microsoft also named
Phil Spencer, head of the Xbox brand since 2014, the inaugural CEO of the newly established
Microsoft Gaming division, which now houses the Xbox operations team and the three publishers in the company's portfolio (Xbox Game Studios, ZeniMax Media, Activision Blizzard). Microsoft had not released statements regarding Activision's recent legal controversies regarding employee abuse, but reports have alleged that Activision CEO
Bobby Kotick, a major target of the controversy, would leave the company after the acquisition is finalized. The deal was closed on October 13, 2023. In January 2023, CEO Satya Nadella announced Microsoft would lay off 10,000 employees. The announcement came a day after hosting a
Sting concert for 50 people, including Microsoft executives, in
Davos, Switzerland. On January 23, 2023, Microsoft announced a new multi-year, multi-billion dollar investment deal with
ChatGPT developer
OpenAI. In June 2023, Microsoft released Azure Quantum Elements to run molecular simulations and calculations in
computational chemistry and materials science using a combination of AI, high-performance computing and
quantum computing. The service includes
Copilot, a GPT-4 based large language model tool to query and visualize data, write code, initiate simulations, and educate researchers. On November 20, 2023, Satya Nadella announced that
Sam Altman, who had been
ousted as CEO of OpenAI just days earlier, and
Greg Brockman, who had resigned as president, would join Microsoft to lead a new advanced AI research team. However, the plan was short-lived, as Altman was subsequently reinstated as OpenAI's CEO and Brockman rejoined the company amid pressure from OpenAI's employees and investors on its board. In March 2024,
Inflection AI's cofounders
Mustafa Suleyman and Karen Simonyan announced their departure from the company in order to start Microsoft AI, with Microsoft
acqui-hiring nearly the entirety of its 70-person workforce. As part of the deal, Microsoft paid Inflection $650 million to license its technology. In January 2024, Microsoft became the most valued publicly traded company. Meanwhile, that month, the company announced a subscription offering of artificial intelligence for small businesses via Copilot Pro. In June 2024, Microsoft announced it would be laying off 1,000 employees from the company's mixed reality and Azure cloud computing divisions. The same month, Microsoft announced that it was building a "hyperscale data centre" in South East Leeds. In July 2024, it was reported that the company was laying off its
diversity, equity, and inclusion (DEI) team. On July 19, a
global IT outage impacted Microsoft services, affecting businesses, airlines, and financial institutions worldwide. The outage was traced back to a flawed update of
CrowdStrike's cybersecurity software, which resulted in Microsoft systems crashing and causing disruptions across various sectors. Despite CrowdStrike's CEO
George Kurtz clarifying that the issue was not a cyberattack, the incident had widespread consequences, leading to delays in air travel, financial transactions, and medical services globally. Microsoft stated that the underlying cause had been fixed but acknowledged ongoing residual impacts on some
Microsoft 365 apps and services. In September 2024,
BlackRock and Microsoft announced a $30 billion fund, the Global AI Infrastructure Investment Partnership, to invest in AI infrastructure such as data centers and energy projects. Partners include
Abu Dhabi-backed MGX and
Nvidia, which will provide AI expertise. Investments will primarily focus on the U.S., with some in partner countries. Microsoft also announced relaunch of its controversial tool, Recall, in November 2024 after addressing privacy concerns. Initially criticized for taking regular screenshots without user consent, Recall was changed to an opt-in feature instead of being default on. The UK's Information Commissioner's Office monitored the situation and noted the adjustments, which included enhanced security measures like encryption and biometric access. While experts regarded these changes as improvements, they advised caution, with some recommending further testing before users opted in. On February 28, 2025, Microsoft announced that Skype would be shutting down on May 5, 2025, to streamline its focus on Microsoft Teams. The company stated there would be no job cuts due to the shutdown. In mid-2025, Microsoft's Russian division, Microsoft Rus LLC, filed for bankruptcy after President
Vladimir Putin stated that foreign services providers should be throttled in Russia to make way for domestic software. The company had restructured operations in Russia after the
2022 Russian invasion of Ukraine, but those restructuring efforts had failed. On May 23, 2025, it was reported that Europol's European Cybercrime Centre worked with Microsoft to disrupt Lumma Stealer, a significant infostealer threat. The joint operation targeted a sophisticated ecosystem that allowed criminals to exploit stolen information on a massive scale. On July 2, 2025, Microsoft announced it would cut nearly 4% of its workforce, around 9,000 jobs, to control costs amid heavy AI infrastructure spending, while also restructuring management and streamlining operations. According to an analysis by
Bridgewater Associates, Microsoft—along with
Amazon,
Alphabet and
Meta—is expected to collectively invest about $650 billion to scale up AI-related infrastructure in 2026. In March 2026, Microsoft-controlled discussion forums banned the nickname
Microslop, used to express pushback against Microsoft's Copilot-based and
GenAI efforts. In March 2026, Microsoft signed an energy pledge at the White House which required it to bear the cost of new electricity generation to power its data centers. On 9 March 2026, Microsoft unveiled the Copilot Cowork tool, which is based on
Claude Cowork, tapping into the growing demand for
autonomous agents. ==Corporate affairs==