Java Platform, Enterprise Edition (Java EE) is a set of specifications that extend the Java Platform to support large-scale, multi-tiered, and distributed applications. It provides a robust environment for developing and running enterprise-level applications, offering features like web services, component-based architecture, and security. Java EE includes various APIs and services, such as Java Servlets, JavaServer Pages (JSP), and Enterprise JavaBeans (EJB). These tools help developers create scalable and maintainable applications that can handle complex business processes, making it a popular choice for organizations looking to build reliable software solutions.