What is an APS software in Supply Chain?

APS (Advanced Planning & Scheduling) refers to tools that optimize planning decisions such as forecasting, replenishment, and capacity planning beyond what ERPs can do natively. While ERPs are designed for transactional execution, APS systems are designed to compute optimized plans under constraints such as lead times, capacity, and service level targets. Modern APS platforms increasingly embed AI and probabilistic models, so the recommended plan reflects real demand uncertainty rather than static parameters. Used alongside an ERP, an APS tool turns raw transactional data into actionable decisions, which is where most of the gains in service level, inventory and working capital come from.