Question: You need to facilitate user acceptance testing (UAT) on your web application hosted in App Service. Testers must approve changes before they are deployed to production. You should implement support for these requirements with a minimum of cost and complexity. What should you do?

1. Configure an additional App Service instance. In Azure DevOps, enable an approval gate for deployment.
2. Configure an Azure load balancer to redirect traffic to the approved App Service instance.
3. Configure an additional deployment slot in the existing App Service instance.
4. Configure an App Service Environment (ASE).

Answer: The correct answer of the above question is Option C:Configure an additional deployment slot in the existing App Service instance.