Since the beginning of time human beings had the need of having special events. First, they were made for cultural and celebration purposes, but their area increased continuously. Today, the events vary from personal celebrations to mega events, from voluntary events to private musical events, form cultural to sporting events. Shone and parry classify special events by purpose and these are: leisure events (sport, recreation, and leisure), personal events (weddings, anniversaries, and birthdays), cultural events (Sacred, ceremonial, folklore, art, and heritage) and organizational events (commercial, political, charitable, sales). According to their size and scale, events are categorized in the following way, from the smallest to the biggest: local/community events, hallmark events, major events and mega events. (Bowdin, 2006, p.15) As Bowdin (23, 24) says further in his book, because of the complexity and volume of events industry today, a large range of event suppliers had been developed, which may work only for this industry, like catering, staging, lightning, fireworks, entertainment, but as Tassiopoulos (2005, p.46) states, few suppliers are dedicated exclusively to the events, they just interfere with them as transportation, communication and security do.
Events are organized by professionals working in a specific organizational structure, according to the size and complexity of the event. This could be simple, functional or a network one or a matrix type if the event is held at various venues.
The network type consists in having an event manager or a small team as organizer(s) and hiring suppliers for what the event needs. So even if the organising team is not big enough to produce all the resources for an event, it can hire other organizations that supplies them with what else they need for materializing the event concept. This process is called by Bowdin as creating “virtual