Spotify celebrates five years of Backstage, its open source framework for building internal developer portals (IDPs), which has evolved into a commercial enterprise product. Initially developed to enhance internal developer productivity, Backstage has gained traction among over 3,000 companies, demonstrating the benefits of community involvement in software development. The journey highlights the balance between serving internal needs and contributing to the larger developer ecosystem, ultimately leading to improved products for both Spotify and its enterprise customers.