Incident impact is the primary factor for classification and categorization. It ensures incidents are addressed based on their potential to disrupt the organization.
"Incident impact should be the primary factor in defining categorization levels to ensure appropriate prioritization and response."
- CISM Review Manual 15th Edition, Chapter 4: Incident Management, Section: Incident Classification and Prioritization* ISACA practice database stresses that focusing on impact ensures incidents receive the proper response priority.