When planning a potential migration of on-premises infrastructure to Azure, you may want to retain your existing public IP addresses due to your customers' dependencies or established IP reputation. Today, we are announcing the general availability of the ability to BYOIP (Bring Your Own IPs) to Azure. Public IP ranges can be onboarded to Azure as regional Custom IP Prefix resources, where they can be utilized in the same manner as Azure-owned public IP prefixes.
Learn more about Custom IP Prefixes.