In this article, Andrew Seay offers a solution to silo’d supply chains. Recently put an item on promotion and quickly stocked out?  Frustrated by the pile of aging inventory sitting in the annex warehouse?  Trying to determine whether a plant shutdown is the right choice?  At some point in every company’s growth, it will eventually confront challenges similar to these.  A Sales, Inventory and Operations Planning process is often what’s needed to overcome them. In this article, we’ll define the…