IPv4 addresses are exhausted, making them expensive assets.

Purchasing IPv4 addresses directly can cost between $35 to $52 per address, depending on block size.

Allocate a new public IPv4 address to a virtual machine (Instance level Public IP) or a Cloud Service.

Pricing - Virtual Machine IP Address Options - Microsoft Azure

Determine how many IP addresses your organization actually needs (e.g., a /24 subnet, which is 256 addresses).