“…While we have assumed that high-tech SMEs can face this uncertainty by enhancing OI breadth, our results show, As a robustness check, we classified I4.0 technologies in accordance with the SME maturity in their adoption. Following the classification proposed by Rauch and Matt (2021), we computed three discrete variables that measure, respectively, how high (Horizontal and Vertical Integration, Cloud, Industrial Internet of Things, Big data and Analytics), medium (Autonomous Robots, Simulation, Cyber-Security), and low-mature (Additive Manufacturing, Augmented Reality) I4.0 technologies are adopted by the SMEs in our sample. We computed the same negative binomial regression models discussed above replacing the dependent variable with each of these three discrete variables.…”