With globalization, supply chain has extended its each beyond any boundaries. However, it is important to point out and analyse the trade-off between economic gain vs environmental ans social compromises.
In case of centralisation and decentrilisation with respect to supply chain perspective. I personally feel sustainable performance will significantly improve with centralisation. It reduces the hassles for each SBU to look into SCM issues. It will also improve the efficiency, productivity and focus on core areas.