Abstract

This chapter explores the building blocks of service-oriented architecture (SOA) by covering the SOA players, actions, message exchange patterns, intermediaries, and data and schema. Components in SOA fall into one of three roles: consumer, service, or service broker. The consumer role makes requests to services. A consumer is a software application or another service that binds to the service using a predefined service interface and document schema. The Service Role provides functions to consumers. Services accept consumer requests through their service interface using a document schema and execute an operation on the document. Services are available at known endpoints defined with a Universal Resource Locator (URL). The Service Broker Role brings consumers and services together by providing a registry of known services. The registry provides a search function for consumers to discover services. The registry provides the consumer with the URL to the service endpoint, the service interface definition, and document schema.

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