Your company operates 300 virtual machines in a VMware environment with varying sizes and utilization. You plan to migrate all VMs to Azure and need to determine how many and what sizes of Azure virtual machines will be required, while minimizing administrative effort. Which Azure tool should you use to generate this sizing and migration recommendation?

Azure Migrate is the correct tool because it is specifically designed for discovery, assessment, and migration of on-premises workloads to Azure. It can analyze your existing VMware environment, collect performance data, and recommend appropriate Azure VM sizes and types, along with cost estimates, directly addressing the need for sizing and migration recommendations with minimal administrative effort. Azure Pricing Calculator helps estimate costs for planned Azure resources but doesn't perform discovery or provide sizing recommendations based on existing on-premises environments. Azure Advisor provides recommendations for optimizing existing Azure resources (cost, security, performance, etc.) but isn't for pre-migration assessment. Azure Cost Management helps monitor and optimize costs for resources already in Azure.