What are Web Services? (5)
distributed system
in which applications communicate with applications
via XML messages
Everything else follows from this. Most obviously:
messaging (e.g. SOAP, XML)
description (e.g. WSDL, XML Schema)
discovery (e.g. UDDI)
security (e.g. TLS, SSL)
C. M. Sperberg-McQueen
11 of 31