Special-purpose software vs. general-purpose
Everbridge, Inc. (EVBG) builds and operates computer software as a service, as described by Yahoo Finance:
Description
“Everbridge, Inc. operates as a software company in the United States and internationally. The company's Critical Event Management, a software as a service based platform with various software applications that address tasks an organization has to perform to manage a critical event, including Mass Notification that enables enterprises and governmental entities to send notifications to individuals or groups to keep them informed before, during, and after natural or man-made disasters, and other emergencies; Safety