Which service is suitable for hosting REST APIs with automatic scaling and minimal server maintenance?

Azure App Service is the most suitable choice for hosting REST APIs with automatic scaling and minimal server maintenance. It's a fully managed Platform-as-a-Service (PaaS) offering, meaning Microsoft handles the underlying infrastructure, patching, and scaling, allowing developers to focus solely on their API code. Azure Kubernetes Service (AKS) offers high scalability and orchestration but requires more operational overhead for cluster management. Azure Logic Apps are primarily for workflow automation and integration, not general-purpose API hosting. Azure Virtual Machines provide the most control but demand significant server maintenance and manual scaling efforts.