Explore the concept of running observability as a service for internal teams using Thanos in this informative conference talk. Learn how Prometheus-based monitoring and observability functionalities can be provided in an API-driven fashion, following the trend in the CNCF ecosystem. Discover the advantages of creating a dedicated observability team to provide tooling for other teams, and understand how running it as a service is a natural progression. Gain insights into the Thanos project, which extends Prometheus API and storage capabilities to a scalable, multi-cluster, and multi-tenant level. Delve into the latest features that enable observability teams to seamlessly deploy Thanos in SaaS mode, enhancing monitoring and analysis across organizations. Presented by Ben Ye from Amazon Web Services and Bartłomiej Płotka from Red Hat, this talk offers valuable knowledge for those interested in improving their organization's observability infrastructure.