To use the Azure AI Vision Face API, you must provision a resource for the service in an Azure subscription. You can provision Face as a single-service resource, or you can use the Face API in a multi-service Azure AI Services resource; which can be provisioned as a standalone resource or as part of an Azure AI Foundry hub.
To use your resource from a client application you must connect to its endpoint using either key-based authentication or Microsoft Entra AI authentication. When using the REST interface you can provide the authentication key or token in the request header. When using a language-specific SDK (for example, the Python azure-ai-vision-face package or the Microsoft .NET Azure.AI.Vision.Face package), you use a FaceClient object to connect to the service.
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