Spotify's Backstage, originally developed to boost developer productivity and streamline platform engineering within the company, has gained significant traction since being open-sourced and donated to the Cloud Native Computing Foundation (CNCF). The platform provides developers with tools to create, manage, and explore services within an organization, reducing cognitive load and improving the developer experience through features like software templates and a central service catalog. Backstage's open-source journey has attracted over a thousand adopters across various industries, including banking and healthcare, and has become a part of the emerging trend of Internal Developer Portals (IDP), which facilitate collaboration and communication between developers. The open-source model has allowed for rapid community-driven enhancements, such as a dark mode feature that was implemented within 24 hours, and continues to drive innovation as new use cases and verticals emerge. Spotify aims to support engineers and reduce cognitive load by growing the Backstage community and enabling productivity engineering across industries.