In this way, SOA represents an important stage in the evolution of application development and integration over the last few decades. These services can be built from scratch but are often created by exposing functions from legacy systems of record as service interfaces.
Service governance controls the lifecycle for development and at the appropriate stage the services are published in a registry that enables developers to quickly find them and reuse them to assemble new applications or business processes. The services are exposed using standard network protocols-such as SOAP (simple object access protocol)/HTTP or Restful HTTP (JSON/HTTP)-to send requests to read or change data.
Service interfaces are frequently defined using Web Service Definition Language (WSDL) which is a standard tag structure based on xml (extensible markup language). Applications behind the service interface can be written in Java, Microsoft .Net, Cobol or any other programming language, supplied as packaged software applications by a vendor (e.g., SAP), SaaS applications (e.g., Salesforce CRM), or obtained as open source applications. This interface is a service contract between the service provider and service consumer. The service interfaces provide loose coupling, meaning they can be called with little or no knowledge of how the service is implemented underneath, reducing the dependencies between applications. checking a customer’s credit, calculating a monthly loan payment, or processing a mortgage application). This removes tasks from the application developer who previously redeveloped or duplicated existing functionality or had to know how to connect or provide interoperability with existing functions.Įach service in an SOA embodies the code and data required to execute a complete, discrete business function (e.g.
Services use common interface standards and an architectural pattern so they can be rapidly incorporated into new applications. SOA, or service-oriented architecture, defines a way to make software components reusable and interoperable via service interfaces. What is SOA, or service-oriented architecture? Explore SOA (service-oriented architecture), an important stage in the evolution of application development and integration.
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