Urgent – Sev 1 (This is considered to be a critical business outage: This would be a complete loss of one or more of your primary systems or services and core business processes. During one of these issues business-critical work cannot continue)

High – Sev 2 (This classification is limited to critical business impact: with a significant loss or degradation of services with business-critical work severely affected, but not completely stopped.)

Normal – Sev 3 (These cases are for moderate business impact: Mild or moderate functionality loss of services, but work can continue in a degraded manner)

Low – Sev 4 (This would be the most minimum business impact on your systems: This would be 80-90% functionality with minor or no impediments of services)