We are currently using Everbridge as our mass communication software for events considered emergencies or crises. I am responsible for mass notifications. We do use IT alerting as well, but I am responsible for the mass communications piece of emergency response.
We use this software in the event of a crisis or an emergency, either weather-related or safety-related, and we use it globally. The emergencies and crises can be anything from a landslide to an earthquake to an active shooter to chemical spills and so on.