This document provides a guide to web analytics and marketing metrics. It discusses the importance of tracking the right metrics that matter to executives, such as those relating to revenue, costs, and business growth. It suggests metrics in key areas like brand performance, customer lifetime value, online and offline sales attribution. The document also discusses ensuring metrics are relevant to the business objectives and used properly. It provides examples of how simple and focused analytics can provide meaningful insights and business impact. Finally, it rates companies on a "metrics maturity model" in terms of how fully they integrate data, analytics, culture and processes.