Microsoft Corporation History: Founding, Windows Era, Ballmer Years and Satya Nadella Cloud Pivot

Direct Answer

Microsoft Corporation was founded on April 4, 1975, by Bill Gates and Paul Allen in Albuquerque, New Mexico, originally to develop programming language software for the Altair 8800 microcomputer. The company's trajectory was shaped by the IBM PC deal in 1980, the dominance of Windows through the 1990s, an antitrust crisis under CEO Steve Ballmer, and a fundamental cloud-first transformation under CEO Satya Nadella beginning in 2014. The $68.7 billion acquisition of Activision Blizzard, completed October 13, 2023, and an early and deep partnership with OpenAI positioned Microsoft as a central player in the AI era.

Key milestones

CEO timeline

Four eras of Microsoft history

DOS and early Windows (1975 to 1994)

Microsoft began as a programming language company, writing a BASIC interpreter for the Altair 8800. The company's trajectory changed permanently in 1980 when IBM contracted Microsoft to supply an operating system for the IBM PC. Microsoft acquired QDOS from Seattle Computer Products, rebranded it as MS-DOS, and retained non-exclusive licensing rights. As the IBM PC clone market exploded through the 1980s, every machine running DOS generated Microsoft royalties, funding rapid expansion into application software. The company went public on March 13, 1986, at $21 per share. Microsoft Office first shipped for Macintosh in 1989, establishing the productivity suite that would dominate office computing for decades. Windows 3.0 in 1990 and Windows 3.1 in 1992 brought graphical computing to the mass market and set the stage for the era that followed.

Windows dominance and antitrust (1995 to 2001)

Windows 95, released August 24, 1995, defined the modern consumer PC and arrived with an unprecedented consumer marketing campaign. The product established conventions that remain visible in contemporary operating systems. Internet Explorer, bundled with Windows at no charge beginning in 1995, triggered the browser wars with Netscape Navigator. By the late 1990s Internet Explorer had captured the dominant share of browser usage. The U.S. Department of Justice and 20 state attorneys general filed antitrust suits in 1998, alleging that Microsoft used its Windows monopoly to harm competition. A 2000 ruling found Microsoft had violated antitrust law; the remedy phase and appeals continued through 2001. A consent decree settled the case in 2001 without breaking up the company, but the litigation consumed management attention and defined the public perception of Microsoft's competitive practices throughout this era.

Ballmer era (2000 to 2014)

Steve Ballmer became CEO on January 13, 2000, and led Microsoft through a period of significant revenue growth driven by Windows and Office licensing, while the company missed or arrived late to several technology transitions. Windows XP (2001) became one of Microsoft's most widely adopted operating systems. The Xbox console launched November 19, 2001, establishing Microsoft as a credible participant in home gaming; Xbox Live followed in 2004, creating the online gaming subscription model that influenced the entire console industry. Windows Vista (2007) was widely criticized for performance and compatibility issues, and Windows 7 (2009) was received as a corrective. Windows 8 (2012) attempted a touch-first redesign but alienated traditional PC users and was revised with Windows 8.1 in 2013. Microsoft's mobile strategy centered on Windows Phone never achieved meaningful market share against iOS and Android, widely considered the Ballmer era's most consequential missed opportunity. Amazon Web Services launched in 2006 and grew rapidly while Microsoft's Azure cloud platform began in 2010 as a relatively minor priority. Surface hardware launched in 2012. Ballmer announced his departure in August 2013 and left on February 4, 2014.

Nadella cloud transformation (2014 to present)

Satya Nadella became CEO on February 4, 2014, and announced a cloud-first, mobile-first strategy within weeks. Azure was prioritized as the company's growth engine. Office was reoriented toward subscription revenue as Microsoft 365, replacing perpetual license sales. Microsoft reversed previous policies on open source, open-sourcing the .NET framework and acquiring GitHub for $7.5 billion in June 2018. LinkedIn was acquired for $26.2 billion on December 8, 2016, adding a professional network to Microsoft's portfolio. Microsoft Teams launched in 2017 and accelerated sharply during the 2020 remote work transition, challenging Slack and becoming the centerpiece of Microsoft's workplace collaboration offering. Microsoft reached $1 trillion in market capitalization on April 25, 2019, the first U.S. public company to do so. The OpenAI partnership began in 2019 with a $1 billion investment; a $10 billion follow-on investment was announced January 23, 2023, alongside Bing's integration with GPT-4. The Activision Blizzard acquisition closed October 13, 2023, for approximately $68.7 billion after regulatory review in multiple jurisdictions. Microsoft's Copilot AI assistant was integrated across Windows, Office, Teams, and GitHub, applying the OpenAI relationship directly to the company's core products. Market capitalization reached $3 trillion on January 24, 2024, briefly making Microsoft the most valuable publicly traded company in the world.

Frequently Asked Questions

References

• Microsoft Investor Relations
• SEC EDGAR: Microsoft Corporation Form 10-K Filings (CIK 0000789019)