Cerner Corporation, a leading healthcare IT company, employs over 27,000 people and has a large engineering workforce that supports various products, including electronic medical records, data aggregation tools, and device integrations. The company focuses on observability to understand its systems and ensure continued learning from how they are used and performing in production. A principal engineer at Cerner, the author shares their experience with evolving and scaling service infrastructure for the core electronic medical record platform, Millennium, using Spinnaker, Kubernetes, and New Relic. They highlight the benefits of consolidating container build processes, instrumenting services with New Relic, eliminating toil, and driving adoption through techniques like ShipIt Days and good documentation. The company continues to collaborate with New Relic, adopting automation and building apps using their resources.