In 2013, Microsoft officially retired its own Windows Live Messenger (MSN) and moved millions of users over to Skype. 3. The Shift to the Cloud
On May 10, 2011, Microsoft announced it would acquire Skype for $8.5 billion in cash—a massive deal that marked Microsoft's biggest acquisition at the time.
Launched in 2003 by Niklas Zennström and Janus Friis, Skype used peer-to-peer (P2P) technology to make international calling free.
On May 5, 2025 , Microsoft officially retired Skype. Users were encouraged to migrate to Microsoft Teams Free , which now serves as the primary communication tool for the Microsoft ecosystem. Summary of Key Milestones 2003 Skype is founded in Estonia. 2005 eBay buys Skype for $2.6 billion. 2011 Microsoft buys Skype for $8.5 billion. 2013 Windows Live Messenger is merged into Skype. 2017 Microsoft Teams launches, eventually overshadowing Skype. 2025 Skype is officially retired on May 5. Moving from Skype to Microsoft Teams Free
Before Microsoft entered the picture, Skype already had a complicated history of ownership:
Microsoft began focusing heavily on Microsoft Teams , which offered more robust features for businesses.
The acquisition was more than just a purchase; it was a pivot that reshaped global communication. 5 billion deal, and the eventual sunset of the app that once defined video calling. 1. The Pre-Microsoft Era: A Rocky Start
Under Microsoft, Skype underwent a massive technical overhaul. It moved from its original to a centralized, Azure-based cloud service in 2017. This allowed for better syncing across mobile devices but was often criticized by long-time users for being buggy and losing the original "simplicity" that made Skype famous. 4. The Rise of Teams and the Fall of Skype