Starter is like a small Spring project for each module such as web MVC, JDBC, ORM, and so on. For your Spring application, you just add the starters of the respective module in the classpath, and Spring Boot will ensure that the necessary libraries are added to the build by using Maven or Gradle. As a developer, you don't need to worry about the module libraries and dependent versions of libraries, that is, transitive dependencies.
Spring Boot documentation says Starters are a set of convenient dependency descriptors that you can include in your application. You get a one-stop-shop for all the Spring and related technologies that you need, without having to hunt through sample code and copy-paste loads of dependency descriptors. ...
