'''SaaS (Software as a Service)''' is originally referred as the Application Service Provider (ASP) model by the International Data Corporation (IDC) or it is sometimes called "on-demand software" which enables entities to access a complete business software functionality on a cloud based application.
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'''SaaS (Software as a Service)''' is originally referred as the''' Application Service Provider (ASP)''' model by the International Data Corporation ([[IDC]]) or it is sometimes called "'on-demand software"' which enables entities to access a complete business software functionality on a cloud based application.
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The Software & Information Industry Association (SIIA) defines SaaS as an ''application or service deployed in a centralized data center across a network such as the Internet, Inranet, [[LAN]] or [[VPN]].''<ref>[http://www.siia.net/estore/pubs/SSB-01.pdf Software as a Service:Strategic Backgrounder]</ref> Users maybe able to access the SaaS through subscription or by renting it from a vendor or service provider.
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The Software & Information Industry Association ([[SIIA]]) defines SaaS as an ''application or service deployed in a centralized data center across a network such as the Internet, Inranet, [[LAN]] or [[VPN]].''<ref>[http://www.siia.net/estore/pubs/SSB-01.pdf Software as a Service:Strategic Backgrounder]</ref> Users maybe able to access the SaaS through subscription or by renting it from a vendor or service provider.