Java EE, now known as Jakarta EE, is an extension of the Java Platform designed specifically for developing enterprise-level applications. It provides a robust framework that includes a variety of APIs and services to facilitate the development of large-scale applications, such as web applications, enterprise systems, and backend services. Java EE is widely used in industries like banking, healthcare, and e-commerce due to its reliability, scalability, and security features.

1. Multi-Tier Architecture: Java EE applications are typically structured in a multi-tier architecture, which separates the presentation layer, business logic, and data storage. This separation allows for easier management, scalability, and updates without affecting the entire system.
2. APIs and Technologies: Java EE includes a rich set of APIs for various functionalities, such as:
   • Servlets: For handling web requests and responses.
   • JavaServer Pages (JSP): For creating dynamic web content.
   • Enterprise JavaBeans (EJB): For encapsulating business logic.
   • Java Persistence API (JPA): For managing relational data in applications.
3. Integration and Interoperability: Java EE supports integration with various technologies and services, allowing developers to build applications that can communicate with other systems and services seamlessly.
4. Security Features: Java EE provides built-in security features to protect applications from unauthorized access and ensure data integrity.

In 2017, Oracle transferred the rights of Java EE to the Eclipse Foundation, leading to the rebranding of Java EE as Jakarta EE. This transition marked a new era for enterprise Java development, with Jakarta EE continuing to evolve and adapt to modern development needs. The core technologies remain the same, but the naming conventions have changed (e.g., `javax.*` packages are now `jakarta.*`).

Java EE (Jakarta EE) is a powerful platform for developing enterprise applications, providing developers with the tools and frameworks necessary to create scalable, secure, and efficient software solutions. Its rich set of features and ongoing evolution make it a vital choice for enterprise-level development in the Java ecosystem.