Reusing base product features to develop product line architecture

This paper deals with three things - extract features from a base product (legacy or new), extend the features, and organize them into a product line. As a result, an object oriented feature-based conceptual frame has been developed. The framework organizes base product architectural assets in such a way as to lend them to substantial reuse. Mechanisms are provided for instantiating multiple products from a single architecture. The building blocks for the conceptual framework are the USP (unified software development process) and the feature model of FODA (feature-oriented domain analysis).