The buzz word around IT these days is Web Services. A web service is not a website that a human reads. It is not anything with which an end user would directly interact. A web service is a standard platform for building interoperable distributed applications. It allows you as a developer, to interact with other information providers without worrying about what they are running either at the backend or even their front-end. Take for example a company stock ticker that you may wish to have, say on your website or intranet. The data could possibly be coming from a major news site like MSN or NASDAQ. The way you would currently achieve this is either by buying access to their database or by ‘scraping’ their home page HTML for the relevant data and converting it into your format. Suppose they go ahead and change their web design, all the scraping code you would have written would be rendered useless. Even if you buy access into their system, they may be running a technology that is incompatible or too hard to work with your own.
Follow up the link for more information.
http://www.codeproject.com/KB/IP/intro2websvc.aspx
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