This document provides an overview of conversion rate optimization (CRO). It discusses defining goals and key performance indicators. Various tactics for optimizing conversions are presented, including A/B testing, understanding customer journeys, segmentation, and taking advantage of opportunities. The importance of measurement and different digital marketing channels are covered. Examples of customer journeys and benchmarks for ecommerce conversions are also included. Throughout, the focus is on improving visits, conversion rates, and average order value to increase overall revenue.