What were some of the biggest tech outages before Microsoft 365?

The Microsoft 365 outage on November 12 disrupted services such as Outlook, Teams and Copilot. Other major tech disruptions include the 2024 CrowdStrike incident, which crashed 8.5 million Windows devices, Meta's 2021 outage that took down Facebook, Instagram and WhatsApp, an AWS outage lasting over 14 hours, and a major Google infrastructure failure.