One factor that led to the advent of business-level applications is a limitation in the Java EE packaging model. The notion of a Java EE application is tightly coupled to the packaging structure, such as an EAR file. That is, the contents of an EAR correspond to an application. There is no Java EE application construct that spans EARs, which is limiting because applications are often very large to the extent that it is not practical to package the entire application into a single EAR. What is desirable is some higher level construct that can group EARs together into one logical entity.
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