Schaefer, InaInaSchaeferHeuer, AndréAndréHeuerJäger, TobiasTobiasJägerKaufmann, TobiasTobiasKaufmannManz, ChristianChristianManzMay, ReinholdReinholdMayReuter, ChristianChristianReuterRumpe, BernhardBernhardRumpeSchlingloff, HolgerHolgerSchlingloffSchröck, SebastianSebastianSchröckSchulze, ChristophChristophSchulzeSchulze, MichaelMichaelSchulzeWeißleder, StephanStephanWeißleder2022-03-052022-03-052016https://publica.fraunhofer.de/handle/publica/25045810.1007/978-3-319-48003-9_11Variability management and reuse are important concerns in the development of variant-rich software-intensive systems. In this chapter, we present the SPES XT modeling framework's mechanism to capture the orthogonal concern of variability.en004006book article