The "cloud" can be a difficult concept to grasp, given the various definitions it has been assigned by software vendors and users. Greg Johnsen, executive vice president of marketing and sales with GT Nexus, calls it "an information replica of the physical supply chain." Cloud-based technology provides one place where managers can go to monitor critical supply-chain events. When an element is updated, "everybody gets the information."

Warehouse-management system (WMS) software is hardly new, but users are increasingly on the lookout for new applications that can be implemented more quickly and less painfully, says Diego Pantoja-Navajas, president and chief executive officer of Logfire. Among the new features they are exploring is the software-as-a-service (SaaS) model, dubbed more recently cloud-based technology.