Final answer:
Azure App Service is the best option for minimizing administrative effort when migrating a web application to Azure, as it is a fully managed platform designed for ease of use and scaling.
Step-by-step explanation:
When looking to migrate a web application to Azure while minimizing administrative effort, the most suitable option would be Azure App Service. Azure App Service is a fully managed platform for building, deploying, and scaling web apps quickly and efficiently. It abstracts the underlying infrastructure, allowing developers to focus on the app itself rather than managing servers, storage, or network elements.
Azure Virtual Machines would give you more control over the environment but would require significant setup and maintenance. Azure Functions is ideal for event-driven applications, specifically small pieces of code triggered by various events, not typically used as standalone web application hosts. Lastly, Azure Storage Accounts provide scalable cloud storage for data but do not directly support web application hosting.