Modules in APS are:

• Production Planner module for automatic generation of work orders and procurements based on current demand, supply & production constraints.
• Production Execution module for keeping track of production schedule and updating old plans based on real-time production situations.
• Shop Floor Scheduling module for planning the complex sequencing of work orders based on capacity constraints.
• Demand Forecasting module for generation of future demand estimates based on sales history, customer forecasts, and management goals. 
• Replenishment Planning module for maintenance of inventory based on safety levels, current orders and future demand forecasts.

Advance Planning and Scheduling is a decision-making system which helps you to:

• Manage inventory costs by maintaining inventory levels of your products based on customer satisfaction, demand variability and supply variability.
• Obtain better return on investment and provide high priority customers good service by assisting in making planning decisions to allocate constrained material and shared capacity to the right customers.
• Confirm and plan for delivery dates on orders received and hence improving customer satisfaction and market share.
• Optimizes on sourcing decisions on when you should order raw materials from your suppliers, and in what quantity considering real-time capacity restrictions and save on inventory costs.
• Schedule capacity resources optimally, maximizing factory utilization efficiently and effectively to help improve your overall profitability.

In brief, it is a scalable and cost effective solution that helps to improve cash flows by increasing inventory turns, utilize asset better by reducing waiting time for material, increase market share by improving customer delivery performance and lessen production cost by reducing overtime and expedite costs.