Re: [service-orientated-architecture] What is a Service? What is an Application?

[Bill Appleton]

Applications are usually service compositers and consumers. Consuming services is all about suporting a user interface or some other high-level application. Services are the building blocks for applications, and the applications should be rapidly assembled combinations of services that can be easilly deployed.     Best,   Bill Appleton CTO DreamFactory Software tel. 408-399-7454  x 102 fax. 408-351-9005 cel. 408-656-3024 [EMAIL PROTECTED]     ----- Original Message ----- From: Anil John To: service-orientated-architecture@yahoogroups.com Sent: Wednesday, October 26, 2005 7:39 PM Subject: [service-orientated-architecture] What is a Service? What is an Application? Greetings, Is there general agreement on what a "Service" is and what an "Application" is in the context of a SOA? Some of the definitions I've come across for a Service are: "A service is a location on the network that has a machine-readable description of the messages it receives and optionally returns" -- SOA with Web Services by Eric Newcomer & Greg Lomow "A discrete unit of logic that exist autonomously that conform to a set of principles that allow them to evolve independently, while still maintaining a sufficient amount of commonality and standardization" -- SOA by Thomas Erl Others include - "A service is defined as a computer program that provides a self-contained, stateless function, which accepts one or more requests and returns one or more responses through a well-defined interface." Definition of Application range from "An application is a computer program with a user interface" to others much more esoteric. While I don't exactly expect everyone to agree, is there at least a description of what a Service is and an Application is in a SOA that folks can actually live with? Regards, - Anil SPONSORED LINKS Service-oriented architecture Computer monitoring software Free computer monitoring software YAHOO! GROUPS LINKS  Visit your group "service-orientated-architecture" on the web.    To unsubscribe from this group, send an email to:  [EMAIL PROTECTED]    Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.