In SOA, the architecture is loosely coupled. All the services for the enterprise are defined in one repository. This allows us to have good visibility of the services available. In addition, there is a global data model. Usually, there is one data store where we store all the data sources and each individual service actually writes or reads to it. This allows it to be centralized at a global level.

Another benefit is that there is usually a small number of large services, which are driven by a clear business goal. This makes them easy to understand and consistent for our organization. In general, the communication between the services is decoupled via either smart pipelines or some kind of middleware.