Build scalable REST APIs using Amazon API Gateway private integration with Application Load Balancer

This article announces API Gateway REST API support for direct private integration with Application Load Balancers (ALBs), eliminating the need for intermediary Network Load Balancers.

• Direct ALB integration removes need for NLB intermediary, reducing cost and complexity
• Single VPC link v2 can connect to multiple ALBs or NLBs within a VPC
• Reduces operational overhead, network hops, and latency compared to previous architecture
• Eliminates hourly NLB charges and associated capacity unit costs
• Enables secure VPC-based application exposure without public internet exposure
• Supports microservices on ECS/EKS, hybrid cloud, and enterprise modernization use cases
• Available in all AWS Regions where VPC link v2 and ALBs are present

This feature simplifies REST API architecture by enabling direct, secure connectivity between API Gateway and private ALBs, improving scalability and reducing infrastructure complexity.