This question requires that you evaluate the underlined text to determine if it is correct. When planning to migrate a public website to Azure, you must plan to pay monthly usage costs. Instructions:

Azure services, including those required to host a public website (e.g., App Service, storage, networking), are primarily billed based on usage, resulting in recurring monthly costs. Therefore, planning for monthly usage costs is essential when migrating to Azure.

Deploying a VPN is not a mandatory cost for a public website unless specific hybrid connectivity is required, and it's not the primary cost consideration.

While there might be initial data transfer costs for migration, the question focuses on ongoing planning, and monthly usage costs are a continuous payment.

Reducing connections is a performance optimization, not a direct cost planning element required for migration itself, though it might influence scale and thus cost.