Obtain a Computer Vision API key from https://azure.microsoft.com/en-us/try/cognitive-services/ using the Get API Key button.

Note the Endpoint URL and Key 1 + 2

Example End Point URL to use is https://westcentralus.api.cognitive.microsoft.com/vision/v1.0/Analyze

In Dynamics NAV go to the service connections and complete the setup of the "Image Analysis Setup"

Important! : Ensure you ad "/Analyze" to the end of the API URL you add from the endpoint during your registration process.

Create article to assist with this is found here:  https://community.dynamics.com/nav/b/katsonsnavblog/archive/2017/08/27/how-to-setup-image-analyzer-for-dynamics365-and-nav