Since the $1980$s companies have tried to keep inventory as low as possible $($zero inventory if possible$)$ with practices like JIT $($Just$-$in$-$Time$),$ VMI $($Vendor Managed Inventory$),$ Consignment Inventory etc. Considering on$-$going supply chain transformation, are the low$-$inventory strategy and the practices still valid? Any alternative strategies? Please feel free to comment.