Your on-premises network has a 200 Mbps link to Azure and a server holding 70 TB of data. Copying the files to an Azure blob container with azcopy would take about 35 days. You want to minimize total migration time. Which solution should you use?

Azure Data Box is the correct solution because it is designed for large-scale data transfers (terabytes to petabytes) when network bandwidth or time constraints make online transfers impractical. Shipping a physical device to Microsoft for data ingestion significantly reduces the total migration time compared to transferring 70 TB over a 200 Mbps link, which is estimated to take 35 days. Azure Storage Explorer is a GUI tool for managing Azure storage, but it still relies on network transfer and wouldn't accelerate a 70 TB migration. Storage Migration Service helps migrate server roles and data from Windows Servers to Azure or newer Windows Servers, but it's not optimized for overcoming bandwidth limitations for massive data transfers. Azure File Sync synchronizes file shares between on-premises servers and Azure Files, but it's a synchronization solution, not a high-speed bulk migration tool for initial large datasets.