Modeling Variability in Software Process Lines

Software process lines (SPrL) are families of related processes, built from a set of administrated software process elements in a prestablished fashion, similar to how software product lines (SPL) are built with software assets. In SPLs, variability is usually speci ed using feature models. As SPrLs manage particular kinds of process elements, namely tasks, roles and work products, we explore the feasibility and applicability of feature and orthogonal variability models for specifying variability in SPrLs. In this paper, we present the kinds of variabilities that are relevant in the context of SPrLs and we show how they may be speci ed with feature models and orthogonal variability models. We use use a simple requirements engineering process as a means for illustrating each issue.