STEP-BY-STEP ANSWER:
Step 1: Gather all revenue and cost data for each customer segment, including direct and allocated indirect costs.
Step 2: Use a cost-hierarchy based approach to assign various indirect costs to the appropriate customer groups based on cost drivers.
Step 3: Calculate the net profitability by subtracting the allocated costs from the revenues for each customer.
Step 4: Analyze the variance drivers (sales-mix, market-share, market-size) to understand discrepancies between projected and actual profitability.
Final Answer: The customer-profitability analysis yields a metric that indicates which customer segments contribute most to the overall profit, thereby guiding pricing and operational strategies.