The supply chain is at the top of the agenda of many CEO’s. The disruptive impact of Covid-19, port congestions, the war in Ukraine and inflation have all put reliability of supply in danger. Realism tells us that before trendy concepts such as digitalization, big data, digital twin and artificial intelligence start helping us to overcome these challenges, we need to bring a solid S&OP process into place as a fundament to build advance capabilities upon. This is a step by step guide how to build your S&OP process.