On a busy Monday in late November, thousands of Microsoft 365 users worldwide found critical pieces of their productivity stack—Outlook, Exchange Online, and Microsoft Teams—either sluggish or unusable, triggering a fast-moving outage that exposed the resilience limits of cloud-first workflows and raised fresh questions about change management at hyperscale. Background
What happened, in brief
Early on November 25, 2024, monitoring sites and user reports began showing widespread problems with...