You need to recommend a maintenance solution for App1 that minimizes operational cost. Which of the following should you recommend?

An Azure Function is the most cost-effective solution for App1 because it's a serverless compute service. This means you only pay for the execution time and resources consumed when the function runs, minimizing operational costs compared to always-on services. Azure Functions are ideal for event-driven, short-lived tasks, which aligns with typical maintenance operations. An Azure Logic App is a serverless workflow service, excellent for orchestrating complex integrations but generally more expensive than a simple function for a single task. An Azure Virtual Machine incurs continuous costs for compute and storage, regardless of whether the maintenance task is running, making it less cost-efficient. An App Service WebJob runs within an App Service plan, meaning you pay for the underlying App Service instance even when the WebJob is idle.