Claude is not hosted on Azure. Only Amazon Bedrock and Google Cloud's Vertex AI. Databricks hosts it through AWS within their security perimeter; i.e., requests go through Amazon Bedrock (Fig. 1), as indicated by the model name in AWS format and the response ID starting with the characteristic Bedrock models prefix `msg_bdrk_`.

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There is no discussion of where the Meta Llama models are hosted.  Are these also in AWS?

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Based on the reference to Applicable model developer licenses and terms, I can assume they're hosted directly in Databricks. At least the request IDs have a different format from AWS (`chatcmpl_xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx`