This document discusses Elastic's approach to unified observability using the Elastic Stack. It describes how the Elastic Stack can be used to ingest and correlate logs, metrics, APM, and uptime data to provide a single unified view. It highlights benefits like being able to reuse analysis and content across data sources. It also summarizes Elastic's Common Schema, licensing model, and provides an overview of logs, metrics, APM, and uptime monitoring capabilities in the Elastic Stack.