Demand with a short lead time that’s difficult to estimate. Usually supply for this demand is provided at a premium price. An example of spot demand would be when there’s a spiked demand for building materials as a result of a hurricane.

Inventory Counting 101: Your Simple Guide to Better Stock Management
Running an ecommerce business? Then you know inventory is everything. But here’s the question: do you actually know how much inventory you have right now? Many business owners think as long as they have enough products to sell, the exact count doesn’t matter. That’s a costly mistake. Accurate inventory counts