Cortex experienced a remarkable year in 2020, achieving significant milestones including the release of its first major version, 1.0.0, and advancing to incubation status within the Cloud Native Computing Foundation (CNCF), signaling its maturity and growing enterprise adoption. The year also marked the introduction of the Cortex blocks storage, a new long-term storage engine that reduces operational costs and is based on components from the Thanos project, strengthening the collaboration between the two projects. Contributions to Cortex doubled, reflecting increased community engagement and demand for scalable, efficient metric storage solutions. Case studies from notable adopters like Buoyant, REWE Digital, and Gojek highlighted the project's impact, while AWS's launch of the Amazon Managed Service for Prometheus, built on Cortex, emphasized its scalability and integration with AWS services. Overall, 2020 was a year of growth and collaboration for Cortex, setting the stage for continued advancements in the future.