Final answer:
Copying several gigabits of data to Azure from an on-premises network over a VPN does incur additional data transfer costs, known as data egress fees. Transfers into Azure (ingress) are usually free, but outbound transfers are subject to charges based on the volume and region. It is advisable to check Azure Pricing for accurate cost estimates.
Step-by-step explanation:
In response to the question of whether additional data transfer costs are incurred by copying several gigabits of data to Azure from an on-premises network over a VPN, the answer is true. When you use Azure services, any data that is transferred out of Azure data centers is subject to outbound data transfer charges. This is commonly known as data egress fees. However, it's important to note that data transferred into Azure (ingress) is typically free of charge. The exact costs can vary depending on the volume of data transferred and the specific pricing model of the Azure region being used for the services.
It's always a good practice to consult the Azure Pricing page or use the Azure Pricing Calculator to estimate the charges related to data transfer before proceeding with a large-scale data migration.