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One of the design goals of Product Line Architectures (PLAs) is to remain stable while accommodating changes of stakeholder's requirements. However, the stability of a PLA is largely dependent on how modularized are the decisions crosscutting multiple architectural variation points. Their scattered implementation often leads to a number of side effects, such as architecture-wide modifications. This paper proposes a novel component model to encapsulate architectural variation points inside aspect-connectors, called Connector-VPs. The authors' component model addresses limitations of emerging aspect-oriented models, such as XPIs, which do not allow a modular implementation of crosscutting variability decisions in a PLA.
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