Web services are software components designed to support interoperable machine to machine
interaction over network. They have a standardized way of integrating web applications using
XML, SOAP, WSDL and UDDI over internet backbone. XML is used to code and decode data,
SOAP is used for transfer of data, WSDL is used to describe the available services and UDDI is
used for listing which services are available. Web services allow organizations to communicate
with each other and with clients without intimate knowledge of each other’s IT systems behind
the firewall.
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