What is web services?
Web Services are the key point of Integration for different applications belonging to different Platforms, Languages, systems.
Web services are set of platform independent exposed APIs(functions) which can be used used from remote server over the Internet. There are basically two parties involved in this, one which provides a set of exposed APIs and the another one ,commonly know as web services consumers,is the party which uses the functionality and services provided by web services providing party.
There are different method for providing web services but the most common are SOAP, XML-RPC and REST .