What is the difference between scheduled and unscheduled Cloudflare maintenance?

Scheduled Cloudflare maintenance is planned in advance, typically for routine updates, upgrades, or improvements, and is announced on their status page with specific dates and times. Unscheduled maintenance, on the other hand, is an emergency procedure often performed rapidly in response to an unforeseen issue, security vulnerability, or critical system failure to restore service or prevent further degradation. Unscheduled maintenance often has a higher, though still usually brief, potential for immediate impact.