Core Concepts
This glossary page describes the concepts necessary for deploying your resources with Upbound. For more information, follow the links to the dedicated page for the concept.
A centralized management layer that enables the orchestration of cloud resources and services across multiple providers.
Fully isolated Crossplane control plane instances that Upbound manages for you
The source of your control plane configurations. A control plane project contains the `upbound.yaml` file and any dependencies for your project.
Providers allow Upbound to provision infrastructure on an external service. They handle communication between the control plane and your external resources
Composite resource definitions (XRDs) define the schema for a custom API.
Compositions are declarative templates that enable the creation of multiple managed resources
