- Azure VMs, attached with Standard Internal Load Balancer, are required to assign PIP(Public IP) to access internet. Now, your Azure VMs are possible to access internet with Azure NAT Gateway without PIPs
- Azure VMs access Global IPs are identified as PIPs but this forces lots of effort to allow accesses from Azure to environments. Now, you can simplify Azure VMs access Global IPs by using Azure NAT Gateway
Of course, there should be much more use cases for Azure NAT Gateway. Please let me such use cases with comments of this blog. Here are architecture diagram for #1 and #2 scenarios.
Create and attach Azure NAT Gateway to subnets
Next, choose your PIP to assign Azure NAT Gateway.
Finally, you need to associate this Azure NAT Gateway to your subnets like below.