Backstage is an open-source developer portal created by Spotify to streamline the management of various software components, services, and APIs within a company's tech ecosystem. By consolidating all these elements into a single platform, Backstage enhances developer productivity by providing a comprehensive overview and documentation of services, their locations, and interdependencies. The portal includes a robust Software Catalog that serves as a single source of truth, offering features like TechDocs for centralized documentation, customizable templates, and easy integration with third-party services through plugins. Backstage allows companies to catalog APIs and track dependencies among components, simplifying the complexity of managing large-scale infrastructure. This article guides users through setting up a Backstage instance, configuring PostgreSQL for data storage, and implementing GitHub authentication for security, while also demonstrating how to register components, add APIs, and document dependencies within the Software Catalog.