AWS Network Load Balancer simplifies deployments with support for Weighted Target Groups

Network Load Balancer now supports weighted target groups, allowing you to distribute traffic across multiple target groups with configurable weights for advanced deployment strategies.

Weighted target groups enables key use cases like Blue-Green and Canary Deployments, Application Migration, and A/B Testing by allowing you to register multiple target groups with configurable weights ranging from 0 to 999, providing precise control over traffic distribution. Blue-Green and Canary Deployments allow you to gradually shift traffic between application versions, minimizing downtime during upgrades and patches; Application Migration enables seamless transitions from legacy stacks to new stacks without disrupting production traffic; and A/B Testing facilitates splitting incoming traffic across experimental environments. All target group types are supported, including instance, IP address, and Application Load Balancer (ALB) targets.

Weighted Target Groups routing is available for all existing and new Network Load Balancers across AWS commercial and AWS GovCloud (US) regions at no additional charge. Standard Network Load Balancer Capacity Unit (LCU) pricing applies.

To learn more, please refer to this AWS blog post, and the NLB User Guide.