This document discusses measuring customer productivity using Customer Profitability Analysis (CPA) and Customer Lifetime Value (CLV) models. It outlines factors that affect customer productivity and the importance of measuring it. CPA is defined as allocating revenues and costs to calculate customer segment or individual profitability. The document provides a hypothetical example to interpret CPA, calculating profits for different regions. It then defines CLV as the projected future cash flows from a customer relationship. An example interpretation of CLV calculates the value over 5 years for customers from different regions, assuming sales, costs and retention rates increase annually.