Hi,
Web service is nothing but it is Business logic component it can be used for business Applications, and it can be access HTTP Protocol. in web services under comes that
WSDL: Web service Description language it can showes how many parameters and methods in Web service.
DISCO:It is used to publishing
SOAP:Simple Object Access Protocole.
UDDI:Universal DescriptionDiscovery Integration
Web service is Stateless Management
Remoting:
Remoting is used by using D/F protocoles like HTTP,TCP,FTP etc
Remoting  is State Management
in this main two methodes
Singletone class,
Singlecall class,
Thanks,
Narasima