Before we can learn about Web Services, we need to talk about SOAP.
SOAP stands for the S
rotocol. (This is interesting because SOAP is not simple and does not allow you to access objects per se. It is a protocol, however!)
SOAP is an HTTP-based protocol that allows applications to invoke remote procedure calls across the Internet. SOAP uses XML to encode requests and their subsequent responses.
A SOAP client is any application or piece of software that initiates a SOAP request. A SOAP server
is the software that responds to the request. SOAP requests are handled initially by a web (HTTP) server that then passes the request on to a SOAP server.
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