Could some explain what 'Web services' is, in a nutshell.

Could some explain what 'Web services' is.
I have searched the net but have been more confused as a result.
Jason

Hi,
     A Web Service is as the name implies, a service offered over the internet. For example, the weather service. Internally, it could be a java or a .net web service or any language, for that matter. The only thing that matters is the two-way communication. What makes it so special? Because, it is universal and no matter which platform I'm running on, I can utilize a web service. To make it universal (platform independent), there are some standardized ways on how the communication should happen. The communication happens via XML/SOAP, since it is universal and all major platforms support it. XML/SOAP acts as the middleman. We don't bother how the application works in the 'inside. We put our request(say, I want to know the weather in a particular city) in XML format and send it to the web service. The web service replies back with another XML data, which we can read. The exact signatures(like import export parameters for calling a method/FM) for utilizing the web service are available in a WSDL file that the web service provider makes available publicly. Very popular web services are listed in the UDDI.
Regards,
Arun Prakash

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