This is the most common architecture pattern in most of the enterprise level applications. This is also known as the n-tier pattern, assuming n number of tiers. This is the de-facto pattern for JAVA EE applications.
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Software Architecture Patterns
This is the most common architecture pattern in most of the enterprise level applications. This is also known as the n-tier pattern, assuming n number of tiers. This is the de-facto pattern for JAVA EE applications.
Full article