普及了语音通话技术，曾经有6亿用户的Skype正式关停

Core Viewpoint - Microsoft officially shut down Skype on May 5, 2023, marking the end of an era for a once-dominant voice communication application that was founded in 2003 [1][2] Group 1: Skype's Rise and Fall - Skype was acquired by Microsoft for $8.5 billion in 2011, which was the largest acquisition in Microsoft's history at that time [6] - At its peak in 2007, Skype had over 405 million users, accounting for 8% of global international call duration [7] - The decline of Skype is attributed to its complex technology architecture and Microsoft's strategic misalignment, leading to difficulties in adapting to the mobile era [9][10] Group 2: Key Lessons from Skype's Closure - Skype's positioning was confused, targeting personal users while most of its actual users were small to medium enterprises [15][17] - The focus on feature overload and user acquisition led to a decline in call quality and user satisfaction, resulting in instability [19][20] - Despite a surge in users during the pandemic, Skype failed to capitalize on the opportunity due to technical debt and insufficient team resources, leading users to switch to Zoom [21][22] Group 3: Microsoft's Strategic Decisions - Microsoft chose to develop Teams instead of acquiring Slack, leveraging Skype's backend technology while ensuring Teams received full support and resources [25][26] - The decision to shut down Skype was seen as a necessary move for Microsoft, as the brand no longer provided significant value to the company [26]