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efinition

Software architecture is the collection of fundamental decisions about a software product or solution designed to meet the project’s quality attributes (the architectural requirements). The architecture includes the main components, their main attributes, and their collaborations (their interactions and behavior) to meet the quality attributes. Architecture can, and usually should, be expressed in several levels of abstraction, where the number of levels depends on the project’s size and complexity.

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Cover of SOA Patterns

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Software Architecture Definition