Service layer

Service layer is a software architecture concept used to describe the separation of business logic from the underlying infrastructure. It provides a uniform way of addressing the different elements of an application. The service layer acts as a bridge between the presentation layer and the data layer.

In software engineering, the service layer is an abstraction layer in which application components providing services to the presentation layer of an application are encapsulated, while hiding the implementation details. By separating the service layer from the data access layer, it allows the developers to focus solely on writing business logic and code re-usability.

The service layer is typically used in the Model-View-Controller (MVC) software architecture. As the name implies, MVC is made up of three parts: the Model, View, and Controller. The Model represents the data layer, the View is the presentation layer, and the Controller handles the business logic. The service layer sits between the Model and the Controller, and helps to abstract the logic and communicate between the other two layers.

The added advantage of a service layer is that it can be easily modified or replaced without affecting the code of the other components. This allows developers to use different technologies that are better suited for different tasks, such as handling requests from the web.

In addition, a service layer can be used to programmatically access data from web services, allowing applications to connect more seamlessly with outside sources. This is especially useful for creating applications that rely on real-time data from external sources such as cloud-based applications.

Overall, the service layer can help simplify the development process and help ensure that business logic is separate from the underlying infrastructure. It is an important part of modern software architecture that provides flexibility and robustness to applications.