An architect designs software using architectural styles and quality attributes. To satisfy quality attributes, architectural tactics are used. An architectural tactic determines how to implement a quality attribute in architectural styles. The interaction between architectural tactics and architectural styles plays an important role in meeting quality attributes. In this article, the interaction between architectural tactics, namely “availability” and “performance”, and architectural styles, namely “pipe & filter”, “layered”, “blackboard”, “client-server” and “broker” is evaluated, and then, a new ranking scheme for the architectural styles is proposed. Through this scheme, the best architectural style maybe obtained for every individual quality attribute or their combinations.