Most applications are developed to interact with users; the user enters or searches for data through an interface and the application then responds to the user's input. a web service does additional or less a similar thing except that a web service application communicates solely from machine to machine or application to application. there's typically no direct user interaction. a web service primarily could be a collection of open protocols that's used to exchange data between applications. the use of open protocols allows web services to be platform independent. software that are written totally different|in several|in numerous} programming languages which run on different platforms will use web services to exchange data over computer networks like the internet. In different words, Windows applications will talk to PHP, Java and Perl applications and lots of others, that in normal circumstances wouldn't be potential.

The term web services describes an identical means of integrating Web-based applications using the XML, SOAP, WSDL and UDDI open standards over an internet protocol backbone. XML is used to tag the data, SOAP is used to transfer the data, WSDL is employed for describing the services available and UDDI is employed for listing what services are available. Used primarily as a way for businesses to communicate with one another and with clients, web services enable organizations to communicate data while not intimate knowledge of every other's IT systems behind the firewall.