A customer-driven or "bottom-up" approach to forecasting sales is used primarily to forecast industry sales growth rates.

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A customer-driven or "bottom-up" approach to forecasting sales involves gathering data from individual customers or market segments to estimate sales for each one, and then aggregating these estimates to arrive at a total sales forecast. This approach is primarily used to forecast a company's own sales, rather than industry sales growth rates. Industry sales growth rates are typically forecasted using a top-down approach, which involves analyzing macroeconomic and industry-level data to estimate overall industry performance.

A Customer-Driven or "Bottom-Up" Approach to Forecasting Sales Is Used