Microsoft vs Oracle: Founders, CEOs and History
Microsoft was founded in 1975 by Bill Gates, Paul Allen and is led by Satya Nadella. Oracle was founded in 1977 by Lawrence Joseph Ellison, Robert Nimrod Miner, Edward A. Oates and is led by Clay Magouyrk and Mike Sicilia.
Company facts
Founders
Microsoft
Bill Gates
Microsoft possesses arguably the most well-known, foundational founding story of the entire personal computing revolution, rooted in the intense, effective partnership of two teenage computer prodigies who recognized the software potential of the microcomputer…
Paul Allen
Paul Allen co-founded Microsoft and was crucial to its earliest technical and strategic decisions. He helped develop Altair BASIC, gave the company its original name, and participated in the operating-system opportunity that led to MS-DOS.
Oracle
Lawrence Joseph Ellison
Oracle possesses arguably the most aggressive, intensely competitive, and controversial founding story in the entire history of Silicon Valley, rooted entirely in a CIA contract and driven by arguably the most competitive billionaire in American business histo…
Robert Nimrod Miner
Bob Miner co-founded Oracle and served as the central technical architect behind the company's early database products. While Ellison drove sales and strategy, Miner focused on making the software work for demanding customers.
Edward A. Oates
Ed Oates co-founded Oracle in 1977 and played an important role in the company's early technical and product formation. He helped the young company take relational database concepts and present them in an usable, commercially credible way.
CEOs and their tenures
Microsoft
- Bill Gates1975–2000
Co-founder and CEO
Gates built Microsoft's licensing model: software sold to many hardware makers rather than tied to one.
Source - Steve Ballmer2000–2014
CEO
Ballmer grew revenue from about $23 billion in FY2000 to about $78 billion in FY2013 and built the enterprise server and sales business that Azure later scaled on.
Source - Satya Nadella2014–present
Chairman and CEO
Nadella made Azure and Microsoft 365 the company's core, opened Microsoft to Linux and open source, and positioned it early in generative AI through OpenAI.
Source
Oracle
- Hilary Maxson
Chief Financial Officer
CFO presenting Oracle's FY2027 guidance of at least $90 billion in revenue on the September 2026 earnings call.
Source - Larry Ellison1977–present
Co-founder, Chairman and Chief Technology Officer
Led Oracle as CEO from 1977 to 2014 and has since served as chairman and CTO, directing database and OCI technology strategy. Owns roughly 40% of Oracle shares.
Source - Safra Catz2014–2025
Executive Vice Chair (CEO 2014-2025)
Served as co-CEO from 2014 and sole CEO from 2019 until September 2025, when she became executive vice chair of the board.
Source - Clay Magouyrk2025–present
Co-Chief Executive Officer
Previously president of Oracle Cloud Infrastructure, where he led the OCI build-out from its early engineering team. Named co-CEO on September 22, 2025 with responsibility tied to Oracle's AI infrastructure expansion.
Source - Mike Sicilia2025–present
Co-Chief Executive Officer
Previously president of Oracle Industries, overseeing industry applications including Oracle Health. Named co-CEO on September 22, 2025.
Source
Timeline: Microsoft and Oracle side by side
1975Microsoft
Microsoft Founded
Bill Gates and Paul Allen founded Microsoft after recognizing that the Altair 8800 needed usable programming software. Their first product, Altair BASIC, turned a hobbyist computer kit into a programmable platform.
1977Oracle
Oracle Founded
Larry Ellison, Bob Miner, and Ed Oates founded the company that became Oracle.
1981Microsoft
MS-DOS Ships With IBM PC
IBM introduced its personal computer with MS-DOS 1.0 and other Microsoft products. The milestone mattered because Microsoft's operating-system work moved from a small software supplier's project into the emerging corporate PC standard.
1985Microsoft
Windows Launch
The release of Windows 1.0 began Microsoft's long move from command-line operating systems to graphical personal computing. The first version was not an instant blockbuster, but it gave Microsoft a user-interface path that could evolve with PC hardware.
1990Microsoft
Office Suite Release
The bundling of Word, Excel, and PowerPoint into Microsoft Office created a productivity suite that became central to business work. The bundle simplified enterprise purchasing and made file compatibility a competitive weapon.
1994Oracle
Acquired Rdb
Oracle acquired Rdb in 1994.
1998Microsoft
U.S. Antitrust Case
The U.S. Department of Justice accused Microsoft of using Windows power to suppress browser competition. The case mattered because it placed Microsoft's platform tactics under public and legal scrutiny at the height of its PC strong position.
2010Microsoft
Azure Commercial Launch
Azure gave Microsoft a way to compete in cloud infrastructure as enterprise customers began shifting workloads away from company-owned servers.
2010Oracle
Sun Microsystems Acquisition
Oracle acquired Sun Microsystems, adding Java, Solaris, and hardware assets.
2014Microsoft
Satya Nadella CEO
Satya Nadella became CEO and moved Microsoft away from a strategy that forced every product to serve Windows. He prioritized Azure, Microsoft 365, open source, Linux support, cross-platform software, and a more collaborative developer posture.
2016Microsoft
LinkedIn Acquisition
Microsoft agreed to acquire LinkedIn in 2016 for $26.2 billion in cash. The deal mattered because it added a professional identity network to a company already strong in Office, Dynamics, cloud services, recruiting tools, advertising, and enterprise sales.
2018Microsoft
GitHub Acquisition
Microsoft acquired GitHub for $7.5 billion in stock, reversing years of developer skepticism toward the company. The acquisition placed Microsoft inside the daily workflow of software developers across languages, clouds, and operating systems.
2022Oracle
Cerner Acquisition Completed
Oracle completed the Cerner acquisition and expanded into healthcare data systems.
2023Microsoft
AI Leadership
Microsoft's expanded OpenAI partnership and Copilot product rollout placed the company at the center of enterprise generative AI adoption.
2023Microsoft
Activision Blizzard Acquisition Closes
Microsoft completed the Activision Blizzard acquisition after intense regulatory review. The deal added Call of Duty, World of Warcraft, Diablo, Overwatch, Candy Crush, and other franchises to Microsoft Gaming.
2025Oracle
Clay Magouyrk and Mike Sicilia Named CEOs
Oracle promoted Clay Magouyrk and Mike Sicilia to Chief Executive Officers; Safra Catz became Executive Vice Chair.
2026Oracle
$67.357B FY2026 Revenue
Oracle reported record FY2026 total revenue of $67.357 billion.
2026Oracle
Q1 FY2027: $664B RPO
Oracle reported Q1 FY2027 revenue of $19.3B and RPO of $664B, and completed a $20B at-the-market common stock sale.
Acquisitions
Microsoft
- Activision Blizzard2023$68.7B
- Nuance Communications2022$19.7B
- ZeniMax Media2021$7.5B
- GitHub2018$7.5B
- LinkedIn2016$26.2B
Oracle
- Cerner2022$28.3B
- NetSuite2016$9.3B
- Sun Microsystems2010$7.4B
- BEA Systems2008$8.5B
- Hyperion Solutions2007$3.3B
- Siebel Systems2006$5.8B
Questions about Microsoft vs Oracle
Who is the CEO of Microsoft Corporation and Oracle Corporation?
Microsoft Corporation is led by Satya Nadella and Oracle Corporation is led by Clay Magouyrk and Mike Sicilia. Both serve as the top executive responsible for the company's strategy, operations, and financial performance.
When was Microsoft Corporation founded vs Oracle Corporation?
Microsoft Corporation was founded in 1975 — 2 years before Oracle Corporation, which was founded in 1977. Microsoft Corporation's longer operating history gives it a deeper track record but also potentially more institutional inertia compared to the younger Oracle Corporation.
How many employees does Microsoft Corporation have compared to Oracle Corporation?
Microsoft Corporation employs approximately 223,000 people, while Oracle Corporation employs approximately 141,000. Microsoft Corporation has the larger workforce at 223,000 employees, compared to Oracle Corporation's 141,000. A higher headcount does not necessarily imply greater efficiency — it often reflects differences in business model (e.g., manufacturing vs. software).
Where are Microsoft Corporation and Oracle Corporation headquartered?
Both Microsoft Corporation and Oracle Corporation are headquartered in United States, meaning they operate under the same primary regulatory and tax environment.
Who founded Microsoft Corporation and Oracle Corporation?
Microsoft Corporation was founded by Bill Gates, Paul Allen. Oracle Corporation was founded by Lawrence Joseph Ellison, Robert Nimrod Miner, Edward A. Oates.
Which company has a longer operating history — Microsoft Corporation or Oracle Corporation?
Microsoft Corporation has been operating for approximately 51 years, making it the more established of the two companies. Oracle Corporation has been in operation for around 49 years. A longer operating history often signals greater institutional resilience and brand recognition, though it can also mean slower adaptation to new market conditions.
Figures come from each company's filings and the sources linked beside them. Amounts reported in another currency are shown in US dollars at an approximate rate and marked with ~. Back to the Microsoft vs Oracle overview