Microsoft Cloud & Security Updates | December 2025
Ascend Technologies 2025|12|10
Microsoft continues to roll out important changes across Teams Phone, Windows, and core cloud services. Below is a curated summary of the latest updates released in late 2025—what changed, why it matters, and what organizations should do to stay secure and operational. These insights reflect Microsoft announcements and lifecycle milestones that were finalized or began rolling out throughout November 2025 and are now actively shaping customer environments heading into December.
