Application service provider

An application service provider (ASP) is a business that provides computer-based services to customers over a network. The most limited sense of this business is that of providing access to a particular application program (such as medical billing) using a standard protocol such as HTTP.

The importance of this marketplace is reflected by its size. As of early 2003, estimates of the United States market range from 1.5 to 4 billion dollars. Clients for ASP services include businesses, government organizations, non-profits, and membership organizations.

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Provider types

There are basically four forms of ASP business. These are:

Some analysts identify a volume ASP as a fifth type.This is basically a specialist ISP that offers a low cost packaged solution via their own Web site. PayPal was an instance of this type, and their volume was one way to lower the unit cost of each transaction.

In addition to these types of firm, some large multi-line companies (such as IBM), use ASP concepts as a particular business model that supports some specific customers.

The ASP model

The application software typically resides on the vendor's system. XML and HTML processes on the client's computers interact with this software.

There are a number of advantages to this approach, including:

There are some inherent disadvantages, including:

Examples of ASP Applications

In early 2005, there is a wide range of applications made available to the public using the ASP Model. There are 'free' and simple applications such as Yahoo-Calendar and Yahoo-Notepad and highly sophisticated business solutions such as NetSuite, Centraview, Salesforce.com, 24SevenOffice and CRM OnDemand from Siebel.

History

In terms of their common goal of enabling customers to outsource specific computer applications so they can focus on their core competencies, ASPs may be regarded as the indirect descendants of the computer bureaus of the 1960s and 1970s. In turn, those bureaus were trying to fulfill the vision of computing as a utility, which was first proposed by John McCarthy in a speech at MIT in 1961.

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See also: Application service provider, 1960s, 1961, 1970s, 2003, 24SevenOffice, Centraview, Core competency, HTML, IBM