Service-oriented integration

Service-oriented integration refers to a service-based integration approach used by many organizations:

Many organizations would have used SOA primarily to solve their integration complexities, also known as integration spaghetti. Generally, this is termed as Service-Oriented Integration (SOI). In such cases, applications communicate with each other through a common integration layer using standard protocols and message formats, such as SOAP/XML based web services over HTTP or Java Message Service (JMS). These types of organizations focus on Enterprise Integration Patterns (EIP) to model their integration requirements. This approach strongly relies on heavyweight Enterprise Service Bus (ESB), such as TIBCO BusinessWorks, WebSphere ESB, Oracle ESB, and the likes. Most of the ESB vendors also packed a set of related products, such as Rules Engines, Business Process Management Engines, and so on, as an SOA suite. Such organization's integrations are deeply rooted into these products. They either write heavy orchestration logic in the ESB layer or business logic itself in the service bus. In both cases, all enterprise services are deployed and accessed via the ESB. These services are managed through an enterprise governance model. For such organizations, microservices is altogether different from SOA.