# App Platform Concepts Generated on 27 Mar 2026 App Platform is a fully managed Platform-as-a-Service (PaaS) that deploys applications from Git repositories or container images. It automatically builds, deploys, and scales components while handling all underlying infrastructure. [App Platform Glossary](/glossary/app-platform/): This glossary defines DigitalOcean-specific terms related to App Platform. [Choosing a Plan for Your App Components](https://docs.digitalocean.com/products/app-platform/concepts/choosing-a-plan/index.html.md): Guidance on choosing the right App Platform plan for your app’s components based on usage patterns and needs. [App Platform Build System Update Policy](https://docs.digitalocean.com/products/app-platform/concepts/platform-upgrade-policy/index.html.md): App Platform’s policies for rollout of new stacks, deprecation of old stacks, and timing.