It is a self-sustained and independent unit of software application that is hosted on internet and specific functionalities are implemented to perform business logic. Multiple functionalities are offered by a web service like computing tax, giving UPDATED news, generating pay SLIPS for employees and broadcasting weather report. Application is allowed to EXCHANGE data or share information using web service with various applications on different hardware and operating systems. Thus, web service carries out work to unit software by swapping data IRRESPECTIVE of programming LANGUAGE, hardware and operating system used in the development process. The data transferred by the XML is in the XML format and for communication purpose it uses SOAP, which is a protocol based on XML. Universal Description, Discover and Integration UDDI and Web Services Description Language (WSDL) are used by the web services to describe themselves.

It is a self-sustained and independent unit of software application that is hosted on internet and specific functionalities are implemented to perform business logic. Multiple functionalities are offered by a web service like computing tax, giving updated news, generating pay slips for employees and broadcasting weather report. Application is allowed to exchange data or share information using web service with various applications on different hardware and operating systems. Thus, web service carries out work to unit software by swapping data irrespective of programming language, hardware and operating system used in the development process. The data transferred by the XML is in the XML format and for communication purpose it uses SOAP, which is a protocol based on XML. Universal Description, Discover and Integration UDDI and Web Services Description Language (WSDL) are used by the web services to describe themselves.