This document discusses key performance indicators (KPIs) for ecommerce businesses. It provides information on different types of KPIs including process, input, output, leading, and lagging KPIs. The document also outlines steps for creating KPIs such as defining objectives, identifying key result areas, determining tasks and work procedures, and identifying measurement methods. Additionally, it discusses common mistakes to avoid when building KPI systems, such as creating too many KPIs or not linking them to business strategies.