Introducing Amazon VPC Regional NAT Gateway
Networking & Content Delivery Blog
This article introduces Amazon VPC Regional NAT Gateway, a new availability mode that simplifies outbound internet connectivity by operating at the VPC level instead of per-availability zone.
- Single Regional NAT Gateway automatically scales across availability zones based on workload presence
- Eliminates need for public subnets in every AZ, improving security posture
- Automatic IP address scaling protects against port exhaustion up to 32 IPs per AZ
- Integrates with VPC IPAM for governed IP allocation and selection
- Supports manual or automatic scaling methods with full control options
- Supports four deployment patterns: simple egress, egress with inspection, centralized egress, and centralized with inspection
- Automatically expands to new AZs in 15-20 minutes, up to 60 minutes maximum
- Supports 5 Gbps per AZ, scales to 100 Gbps; up to 5 RNATs per VPC
Regional NAT Gateway simplifies VPC architecture by reducing per-AZ deployments, improving security, and automating IP management while maintaining high availability.
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