About catalogs
An Azure Sphere catalog isolates your Azure Sphere devices from devices that belong to other organizations, and provides a way for you to organize your devices. Your Azure Sphere catalog is an aggregation point for metadata, functional organization, and information about images, deployments, users, and roles.
Each catalog is identified with a GUID. In your catalog, you'll define products and device groups. Device groups organize individual devices into functional areas for your organization.
The following animation shows how catalogs, products, devices, and device groups relate to one another.
Most organizations need only one Azure Sphere catalog. However, large organizations with multiple divisions based on brands or geography, for example, might want to administer devices on a per-division basis. Such organizations can create separate Azure Sphere catalogs that make sense for their organization.