Web services is one of the bases for SOA (service orientated architecture) that can improve your services to customers.

Web service can be used internally (Intranet) or externally (Intranet):
- as data provider for your user applications
- as service provider
...

It is basically a standard defined by w3c that supports machine to machine operations and are platform independent. Clients can be either web applications, other services, Windows application etc.

PHP 5 web services

VB or C#.NET web services

<?php
//// for more informations
//// userform link is here
echo "Request for more informations";
?>