Web services

In simple terms, web service is a service made available over network.

What web services offer?

As shown in the above figure, Application1 runs on Machine1 and Application2 runs on Machine2.By using web services, both the applications (Application1 and Application2) can able to communicate each other.

As per w3.org (http://www.w3.org/TR/ws-gloss/#webservice), a Web service is a software system designed to support interoperable machine-to-machine interaction over a network.

Web service interoperability makes sure that, even applications are written in different languages, they can able to communicate each other using web services. For example, Application1 written in C++ and Application 2 written in Java, Both Application1 and Application2 can able to communicate each other using web services.

Website Vs Web service

Website is for human interaction, for example take amazon.com, you can able to buy books, movies etc.,

Web service for Application level interaction, one application interacts with other using web service.

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