It's the age of the customer, and transforming the customer experience (CX) is one of five critical market imperatives that companies need to shift toward customer obsession. But how can customer experience professionals prove that to their executives? The proof lies in comparing the revenue growth of companies with superior customer experience to that of their direct competitors with comparatively inferior customer experience. This report details how we went about doing exactly that and the surprising results that we uncovered. This is an update of a previously published report; Forrester reviews and updates it periodically for continued relevance and accuracy.