Many companies struggle to determine their own status and strategy when it comes to digitalization and self-organizing production. The Industry 4.0 Maturity Index offers a guideline in this process and helps to ensure future competitiveness. Using the multidimensional maturity model, companies can evaluate their status-quo and develop a roadmap to accelerate their digital development. The case study of a manufacturer of electrical connectivity solutions demonstrates how to reduce costs and increase productivity with the help of the Industry 4.0 Maturity Index.