An unexpected occurrence in the form of poor performance, a total outage, or a partial failure that disrupts business operations or negatively impacts customers. They carry significant risks and the potential for lost revenue or customer dissatisfaction, so the goal is to restore service as quickly as possible and limit the damage. They’re managed based on urgency, level of impact on operations, and how many users will be affected. An effective incident management process requires quick response times and oversight.
Examples: application crash, online systems are slow, wide-spread email or internet outage