Stack Overflow
Stack Overflow is a programming Q&A website and the company that runs it, founded in 2008 by Joel Spolsky and Jeff Atwood; it builds technical knowledge through community questions and answers and sells knowledge-management, data-licensing and advertising products to businesses. Prosus acquired it for $1.8 billion in 2021.
Contents9 sections
Key facts
September 15, 2008Website Opens to the Public
According to the company’s press page, Stack Overflow was founded in 2008 by developers Joel Spolsky and Jeff Atwood, who wanted to make coding resources more accessible.[1]
In a blog post on September 15, 2008, Joel Spolsky announced that the site was opening to the public after a private beta of about five weeks; by his account, the site combined the Q&A format with voting and editing, and most of the building was done by Jeff Atwood with Geoff Dalgas and Jarrod Dixon.[2]
June 2, 2021Acquisition by Prosus Announced
Prosus announced its intention to acquire Stack Overflow for $1.8 billion. CEO Prashanth Chandrasekar wrote on the company blog that after the deal Stack Overflow would continue to operate as an independent company with its current team.[3]
August 2021Acquisition Completed
The company’s press page says Prosus completed its acquisition of Stack Overflow in August 2021, adding it to its education technology portfolio.[1]
May 6, 2024API Partnership with OpenAI
Stack Overflow and OpenAI announced an API partnership under which OpenAI accesses Stack Overflow’s technical content through OverflowAPI to give its users and customers a vetted data foundation.[4]
November 18, 2025Launch of Stack Internal
The company released Stack Internal, an enterprise knowledge system that evolved from what was formerly called Stack Overflow for Teams; it combines human review with AI automation to help engineering teams maintain and find internal company knowledge.[5]
September 30, 2026Next Generation of Stack Internal
The company announced an update to the Stack Internal platform, saying that as AI agents move from answering questions to taking action, both people and agents need to know which knowledge is reliable, where it came from and when it needs verification.[6]
As of October 2026: Products and Leadership
The company website lists its offerings as the enterprise knowledge product Stack Internal, the technical-content data licensing service Stack Data Licensing, and the developer advertising product Stack Ads; the site’s copyright is held in the name of Stack Exchange Inc.[7]
The company’s leadership page lists Prashanth Chandrasekar as chief executive officer and Jody Bailey as chief product and technology officer.[8]
Related Organizations, Websites, and Public Accounts
Stack Overflow: Official website: https://stackoverflow.co/ (opens in a new window)[7]
Stack Overflow Q&A website: Public link: https://stackoverflow.com/ (opens in a new window)[2]
Prosus: Official website: https://www.prosus.com/ (opens in a new window)[3]
X: Official account: https://x.com/stackoverflow (opens in a new window)[7]
LinkedInLinkedInLinkedIn is a social networking platform for professionals. It was founded in 2002 by Reid Hoffman and others, launched in 2003, and listed on the New York Stock Exchange in 2011; after Microsoft acquired it for approximately $26.2 billion in 2016, it became a wholly owned Microsoft subsidiary. Its revenue comes from membership subscriptions, advertising, and recruitment solutions.Open the full entry: Official account: https://www.linkedin.com/company/stack-overflow/ (opens in a new window)[7]
YouTubeYouTubeYouTube is Google’s video-sharing and creator platform, founded in 2005 by Steve Chen, Chad Hurley, and Jawed Karim and acquired by Google in 2006. Built around video uploading, viewing, and creator earnings, the platform has developed Shorts, YouTube Music, Premium, YouTube TV, and products for children, and is headquartered in San Bruno, California, United States.Open the full entry: Official account: https://www.youtube.com/c/StackOverflowOfficial (opens in a new window)[7]
Sources
- News & press – Stack Exchange Inc. - Stack Overflow (opens in a new window)
- Stack Overflow Launches (opens in a new window)
- Prosus’s Acquisition of Stack Overflow: Our Exciting Next Chapter (opens in a new window)
- Stack Overflow and OpenAI Partner to Strengthen the World’s Most Popular Large Language Models (opens in a new window)
- Stack Overflow Unveils Stack Internal, the Trusted Knowledge Intelligence Layer for Technologists in the Age of AI (opens in a new window)
- Stack Overflow Launches the Next Generation of Stack Internal to Power Trusted Enterprise AI (opens in a new window)
- Stack Overflow Business: Solve work’s biggest challenges - Stack Overflow (opens in a new window)
- Senior leadership team - Stack Overflow (opens in a new window)