There is a direct link between SaaS, ASP (Application Service Provider), and on-demand computing software delivery models. The hosted application management models of SaaS are a lot like ASP in the sense that a provider hosts software for the customer before delivering it to confirmed end-users online.nA SaaS deployment service provides beneficial payoffs and saves users from all of the hassles that come with updating, maintaining, installing, and buying an app. SaaS application access is simple and quick, and all is needed is a connection to the Internet.