Skype
The business, the turning points, and the decisions behind them.
01 / WHAT IT BUILT
What the company did
Skype was the pioneering internet telephony service founded in 2003 in Estonia by Niklas Zennström and Janus Friis. It revolutionized global communication with free voice and video calls over the internet, becoming a household name with hundreds of millions of users. eBay acquired it in 2005, an investor group bought a majority stake in 2009, and Microsoft acquired it in 2011 for $8.5 billion, integrating it into Windows, Xbox and Office.
02 / Skype FAILURE REASONS
Failure reasons
Skype declined as free competitors—Zoom, WhatsApp, FaceTime, Google Meet—outpaced it, and Microsoft itself prioritized Teams: during the COVID-19 pandemic Teams became Microsoft's collaboration flagship, and in 2021 Skype was notably absent from Windows 11's default apps. In February 2025 Microsoft announced it would retire Skype in May 2025 to streamline its consumer communications around Teams (free), ending the service on May 5, 2025 after more than two decades.
03 / EVENT HISTORY
Events in the structured record
- Founded
Niklas Zennström and Janus Friis found Skype in Estonia; it pioneers free internet voice and video calling.
- Microsoft acquisition
Microsoft acquires Skype for $8.5 billion, integrating it across Windows, Xbox and Office.
- Eclipse by Teams
Skype is absent from Windows 11's default apps as Microsoft centers Teams; competition from Zoom, WhatsApp and FaceTime erodes its user base.
- Shutdown
In February 2025 Microsoft announces Skype will be retired in May 2025; the service is discontinued on May 5, 2025, with users migrated to Microsoft Teams Free.
04 / CONTEMPORARY REBUILD ASSESSMENT
Difficulty of rebuilding this project today
Material for this section is being gathered and checked. It will appear here once ready.
Overall assessment: Not completed
05 / CAUSAL CHAIN
How the factors connect
- 01
Skype was acquired by Microsoft in 2011 for $8.5 billion; no venture funding figure applies (record funding is null).
- 02
Microsoft announced the retirement in February 2025; service ended May 5, 2025.
- 03
No reliable company-level loss figure with subject/period/basis was disclosed for the shutdown.