Endpoints, keys and SDKs: calling Azure AI services with REST and the Python and C# SDKs

Every Azure AI service is ultimately a REST API. Your app sends an HTTPS request to the resource's endpoint with a path for the operation, an api-version query parameter, a credential and usually a JSON body. The SDKs for Python, C#, JavaScript and Java wrap these calls so you work with typed objects instead of raw JSON, but knowing the REST shape helps you debug and answer exam questions that show a request.