A service is typically a class with a narrow, well-defined purpose. It should do something specific and do it well. Angular distinguishes components from services to increase modularity and reusability. … By defining such processing tasks in an injectable service class, you make those tasks available to any component.

What are Angular services?

A reusable Angular service is designed to encapsulate business logic and data with different components of Angular. It is basically a class that has a well-defined purpose to do something. You can create a service class for data or logic that is not associated with any specific view to share across components.

What is service module in Angular?

A service module would be required if you are using lazy loaded modules which have specific services only provided inside that module. You can’t provide a service into the same module where components of that module get the service injected.