The Business Tier

The business tier consists of components that provide the business logic for an application. Business logic is code that provides functionality to a particular business domain, like the financial industry, or an e-commerce site. In a properly designed enterprise application, the core functionality exists in the business tier components.

Java EE Technologies Used in the Business Tier

The following Java EE technologies are used in the business tier in Java EE applications:

• Enterprise JavaBeans (enterprise bean) components

• JAX-RS RESTful web services

• JAX-WS web service endpoints

• Java Persistence API entities