This document summarizes an eCommerce metrics webinar that will teach companies what metrics to track. It includes an agenda covering introductions, segmenting data, key metrics to track including order, marketing, and customer metrics. It features a case study on Diamond Candles and discusses how Retention Science uses machine learning to predict customer behavior and automate retention campaigns. The webinar discusses ways to segment data by source, product, time, device, and customer type and defines metrics like average order value, conversion rate, customer lifetime value, and more.