AWS CloudFormation and CDK express mode speeds up infrastructure deployments by up to 4x

AWS CloudFormation and CDK Express Mode

AWS CloudFormation and CDK express mode reduces deployment time by up to 4x for developers and AI agents building infrastructure, based on internal benchmarks. Express mode completes stack operations when CloudFormation confirms resource configuration is applied, rather than waiting for extended stabilization checks such as traffic readiness, region propagation, and resource cleanup. This enables faster iteration cycles for developers and AI agents building infrastructure.

When iterating on infrastructure in development environments, developers and AI agents need faster iteration cycles to build infrastructure incrementally. Previously, every deployment waited for full resource stabilization regardless of whether the workflow required it. With express mode, deployments complete in seconds once configuration is applied, and propagation continues in the background.

What to do

• Set --deployment-config '{"mode": "EXPRESS"}' when creating, updating, and deleting stacks or creating a change set through the AWS CLI, AWS SDKs, or the AWS Management Console.
• For AWS CDK users, activate express mode with cdk deploy --express.
• No template changes are required. Express mode works with all existing CloudFormation templates, and nested stacks.

Visit the CloudFormation Express mode documentation to learn more.

This feature is available in all AWS Regions where CloudFormation is supported. Refer to the AWS Region table for service availability details.

Source: AWS release notes

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