A product line is a managed set of related products or services that share a common foundation and offer defined variations.
The shared foundation may include requirements, components, architecture, interfaces, and other reusable assets. In contrast, variability defines the features that distinguish individual variants.
Teams describe variability through variation points, available options, dependencies, and selection rules. Therefore, they can prevent incomplete or incompatible combinations.
Domain engineering identifies common elements and creates reusable assets. Application engineering then selects and adapts these assets for a specific offering. As a result, teams can develop new variants more efficiently.
A product line usually contains alternative offerings that address similar needs. In contrast, a product family may also include complementary solutions for the same application area.
Requirements management must capture common, optional, and alternative requirements. Moreover, it should maintain traceability between shared assets, selected variants, and final configurations.
This structured approach reduces duplicated work, supports controlled variability, and accelerates the delivery of consistent solutions.
« Back to Glossary Index