Final answer:
The best Azure feature for video playback experience is Azure Media Services, which offers scalable high-quality video delivery and works well with Azure CDN to ensure content is delivered efficiently worldwide.
Step-by-step explanation:
To provide the best video playback experience on Azure, you should pick Azure Media Services. Azure Media Services offers streaming solutions that are highly scalable, providing high-quality video delivery to various devices. Azure Media Services incorporates dynamic packaging, encoding, and encryption of your video content for both on-demand and live streaming scenarios. Moreover, it benefits from the integration with Azure Content Delivery Network (CDN) to deliver content more quickly and reliably to users worldwide.
Azure Functions and Azure App Service are also services available in the Azure ecosystem, but they do not specialize in video delivery. Azure Functions is a serverless compute service that focuses on running small pieces of code, or functions, in response to events. Azure App Service is a fully managed platform for building, deploying, and scaling web applications. Neither is designed specifically for video streaming needs.