Event promoters are the folk hosting the events. We call them promoters. These range from small scale groups that throw ordinary nights at clubs, to venue owners, and the bigger event businesses. These bigger agencies host a good selection of events in real areas, now and again even retaining the rights to events that spread the world over.
This is particularly a thing in digital music, where agencies like Insomniac Electric Daisy Carnival, Disco Donnie Presents Something Wonderful, and IDandT Sensation are responsible for many of the main EDM fairs. They, in turn, are often owned by or partnered with one of two major enjoyment conglomerates – Live Nation or AEG.