The Elastic IP service is an advanced feature integrated into the SD-WAN service and, in the future, will also be available for other cloud services.
This service allows you to reserve an IP address or a range of IP addresses, choosing the region they belong to. If necessary, you can move these IPs to reconfigure the SD-WAN service without losing the IP.
This guarantee of always keeping the same IP address is particularly useful for firewall services that expose resources to the outside, ensuring continuity and reliability.