Cortex provides horizontally scalable, highly available, multi-tenant, long term storage for Prometheus metrics, and a horizontally scalable, Prometheus-compatible query API. Cortex allows users to deploy a centralised, globally aggregated view of all their Prometheus instances, storing data indefinitely. In this talk we will discuss Cortex’s history, Cortex’s architecture, and how to get started with Cortex. Cortex is a CNCF sandbox project.