AWS Application Load Balancer launches URL and Host Header Rewrite

AWS Application Load Balancer URL and Host Header Rewrite Capabilities

AWS introduces URL and Host Header rewrite capabilities for Application Load Balancer (ALB). This feature allows customers to modify request URLs and Host Headers using regex-based pattern matching before routing requests to targets.

Key benefits include:

• Transform URLs using regex patterns
• Standardize URL patterns across applications
• Modify Host Headers for internal service routing
• Remove or add URL path prefixes
• Redirect legacy URL structures to new formats

This feature simplifies application architectures by eliminating the need for additional proxy layers, particularly useful in microservices deployments.

What to do

• Configure URL and Host Header rewrites via AWS Management Console, AWS CLI, AWS SDKs, and AWS APIs
• No additional charges for using URL and Host Header rewrites; pay only for ALB usage

This feature is available in all AWS commercial regions.

Source: AWS release notes

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