China's Microsoft 365 outage impact limited by local cloud and software shift

A widespread Microsoft 365 outage disrupted services across at least 74 countries on Friday, affecting Outlook, Teams, and Copilot, while mainland China experienced minimal impact due to its separate digital infrastructure. China's relative insulation stems from three key factors: Microsoft licenses its services to local partner 21Vianet, which operates a physically and logically separate cloud network; government and state-owned enterprises have shifted to domestic alternatives like WPS Office and DingTalk; and strict data localisation regulations require core cloud operations to remain within China's borders. However, China was not entirely unaffected, as foreign multinationals in Shanghai and exporters using global accounts faced disruptions. Technology experts warn that replacing foreign providers with domestic ones does not eliminate single points of failure, and complete isolation can reduce transparency and interoperability.