TMTPOST -- Skype, the instant messaging software, owned by Microsoft in the United States, officially ceased operations on May 5. Microsoft has made a strategic move, migrating Skype's core functions to Microsoft Teams, the communication software that the company is vigorously promoting. Skype has held a significant place in the instant messaging field for a long time, providing users with functions such as voice and video calls, text messaging, and file sharing. However, with the development of the digital technology landscape, Microsoft has been focusing on integrating its various communication products. The transition of Skype's core functions to Microsoft Teams is aimed at streamlining the user experience and promoting the unified use of its communication ecosystem.