Earliest use of SOA in context of Web Services?

Clipping

The Web Services architecture describes the principles behind the next generation of e-business architectures, presenting a logical evolution from object-oriented systems to systems of services. Web Services systems promote significant decoupling and dynamic binding of components: All components in a system are services, in that they encapsulate behavior and publish a messaging API to other collaborating components on the network. Services are marshaled by applications using service discovery for dynamic binding of collaborations. Web Services reflect a new service-oriented architectural approach, based on the notion of building applications by discovering and orchestrating network-available services, or just-in-time integration of applications.