There are numerous ways to skin the mass notification cat, according to numerous enterprise security leaders.
Mass notification is a step up from emergency communications and comprises numerous ways to get the word out to the appropriate people inside and outside buildings as well as through computer networks and mobile devices. Solutions, built upon myriad technologies, are fairly common at K-12 school systems, colleges and universities as well as some government and most military facilities. But the various approaches are catching on with corporate, industrial and other enterprises.