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Backstage

Backstage is an open-source developer portal framework for building internal platforms that centralize software catalogs, documentation, tooling, and infrastructure resources for engineering teams.

  • Software catalog and metadata system for services, libraries, data pipelines, and other assets (developer portal / service catalog).
  • Plugin-based web platform for integrating Continuous Integration and Continuous Deployment (CI/CD), observability, cloud infrastructure, and developer tools (platform engineering).
  • Software templates for scaffolding new projects with standardized configurations and workflows (developer productivity / governance).
  • TechDocs system for publishing and browsing technical documentation sourced from code repositories (documentation portal).
  • Role-Based Access Control (RBAC), authentication integrations, and organizational modeling for portal governance (identity and access / Internal Developer Platform (IDP)).

More About Backstage

Backstage is an open-source framework for building internal developer portals that provide a single user interface for discovering, operating, and governing software and infrastructure across an organization. Originally created at Spotify and now a Cloud Native Computing Foundation (CNCF) project (developer portal / IDP), it addresses the problem of fragmented tooling, service sprawl, and inconsistent Developer Experience (DevEx) in complex enterprise environments.

At its core, Backstage provides a software catalog (service catalog / asset inventory) that models software components, APIs, resources, and domains as structured entities. Teams can register services, libraries, data pipelines, websites, and other components, annotate them with metadata, and relate them through ownership, dependency, and system boundaries. This gives engineering and platform teams a centralized registry for discovering what exists, who owns it, and how it connects, supporting use cases such as incident response, compliance checks, and lifecycle management.

The framework uses a plugin architecture (web application framework / extensibility platform) where most functionality is implemented as independently developed plugins. Official and community plugins integrate external systems such as CI/CD tools, monitoring and observability platforms, issue trackers, cloud providers, and security scanners. Enterprises can compose a portal that surfaces build status, deployments, logs, metrics, alerts, and operational runbooks in one interface, while retaining their existing underlying tools.

Backstage includes Software Templates (scaffolding / workflow automation) that let organizations define YAML-based templates for creating new services and other components. These templates can enforce standardized architectures, repository layouts, security configurations, and compliance checks. When developers create a new service through Backstage, the system can generate repositories, Continuous Integration (CI) pipelines, configuration files, and boilerplate code, embedding organizational standards into the creation process.

The TechDocs capability (documentation portal) allows teams to write documentation in Markdown or similar formats within their source repositories and publish it automatically into Backstage. It uses static site generation behind the scenes and presents documentation in a consistent UI, linked to the corresponding catalog entities. This connects documentation with services and ownership information, improving discoverability and maintenance.

Backstage is commonly deployed as a Node.js-based web application (web platform) backed by a database for catalog storage, with configuration managed as code. It supports authentication and Single Sign-On (SSO) via integrations with identity providers (identity and access management), and it models organizational structures such as users, groups, and teams. Role-based access and plugin-level configuration enable governance over who can view or modify catalog entities, templates, and operational data.

From a directory and taxonomy perspective, Backstage fits into categories such as internal developer portal, service catalog, and platform engineering tooling. It operates as a unifying UI and integration layer on top of existing DevOps, Site Reliability Engineering (SRE), security, and cloud platforms, giving enterprises a configurable way to aggregate information, standardize workflows, and expose platform capabilities to developers through a single, extensible portal.