Severity Level 1 refers to the highest level of urgency in incident management. It indicates a critical situation where a system or service is completely down, causing significant disruption to business operations. Immediate action is required to restore functionality, as this level affects multiple users or critical processes. In a Severity Level 1 incident, response teams prioritize resolution efforts to minimize downtime. This may involve engaging specialized personnel, escalating the issue to higher management, and implementing emergency protocols. Effective communication with stakeholders is essential to keep them informed about the status and expected resolution time.