This document provides an overview of IT Service Intelligence (ITSI) concepts including what a service is, key performance indicators (KPIs), service health scores, and how to set up and use ITSI to monitor IT services. It discusses how to identify and model high-value business services in ITSI by decomposing them into underlying technical services and defining KPIs to monitor each service's health. It also covers features like adaptive thresholding, anomaly detection, multi-KPI alerts, and using notable events to manage incidents. The document concludes with instructions for exploring an ITSI sandbox to build a sample glass table dashboard.