In SaaS pattern, the leading part is SaaS provider, who will rent all kinds of facilities, software systems and communication lines from server dealer, net communicating equipment provider, operating system developer, database developer, network security systems developer, network management systems developer, as well as communication line operator, so as to build up application platforms for all different economic organizations to rent.
Economic organizations make the decisions to choose application systems and their supporting platforms they needed, connect their desktops to SaaS operating platform via internet to form their own information systems.
Through their operating platforms and proper daily maintenances, SaaS provides public services and value-added services for the economic organizations. SaaS providers' income comes from the rent. His direct cost is the rent it pays to for all kinds of facilities and relevant software. Upon receiving the rent from economic organizations and SaaS provider gets his gross margin after all his costs are deducted.