Astronomy Shop, an OpenTelemetry demo application, provides companies with a practical way to explore the features and capabilities of the OpenTelemetry observability standard using a cloud-native e-commerce platform composed of multiple microservices. Developed by the OpenTelemetry community, this demo app addresses the need for a reliable reference implementation, showcasing support for 10 programming languages and offering examples of how to deploy and explore OpenTelemetry features using backends like Dynatrace, Jaeger, and Prometheus. The application is designed to be customizable and includes built-in use cases to simulate application failures, allowing users to thoroughly evaluate and test different OpenTelemetry functions. Dynatrace, a significant contributor to the project, enables enhanced observability by automatically discovering insights about infrastructure and applications when used as a backend. The community continues to update the demo app to reflect the latest advancements in OpenTelemetry, ensuring that it remains a valuable resource for developers seeking to understand and implement observability best practices.