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Analysing the strategic alignment of software requirements primarily providesassurance to stakeholders that the software-to-be will add value to theorganisation. Additionally, such analysis can improve a requirement bydisambiguating its purpose and value, thereby supporting validation andvalue-oriented decisions in requirements engineering processes, such asprioritisation, release planning, and trade-off analysis. We review currentapproaches that could enable such an analysis. We focus on Goal OrientedRequirements Engineering methodologies, since goal graphs are well suited forrelating software goals to business goals. However, we argue that unless theextent of goal-goal contribution is quantified with verifiable metrics, goalgraphs are not sufficient for demonstrating the strategic alignment of softwarerequirements. Since the concept of goal contribution is predictive, whatresults is a forecast of the benefits of implementing software requirements.Thus, we explore how the description of the contribution relationship can beenriched with concepts such as uncertainty and confidence, non-linearcausation, and utility. We introduce the approach using an example softwareproject from Rolls-Royce.

Towards an Approach for Analysing the Strategic Alignment of Software Requirements using Quantified Goal Graphs