ASPs (Application Service Providers) 

Companies that remotely host software applications and provide access to and use of the applications over the Internet or a private network. Typically, the service fee is usage-based, for example, per user per month. Although the term itself has somewhat fallen into disfavor because of the number of ASPs that were formed and then failed at the end of the dot-com bubble, today almost all outsourcing service providers rely on the ASP model for linking aspects of their services to the customer organizations