Design/methodology/approach: Research and development (R&D) activities are crucial if companies are to adapt to technology changes, but budget constraints and limited resources often force companies to select a subset of candidate projects through portfolio selection techniques. However,...

The purpose of this paper is to review the state-of-the-art literature on Industry 4.0 and digitalisation in small and mid-sized enterprises (SMEs). The paper aims to extrapolate and organise recommendations for how to progress in these disciplines from a substantial number of studies. This is...