CloudFormation/CDK Express Mode accelerates deployments up to 4x
CloudFormation and CDK now offer an express deployment mode that bypasses resource stabilization checks for faster iteration.
Editorial summary and commentary based on the original from AWS What's New. Read the original
What's new
- CloudFormation and AWS CDK introduce "express mode" for stack operations.
- Reduces deployment time by up to 4x by skipping extended stabilization checks.
- Express mode completes operations once resource configuration is applied, not after full propagation or readiness checks.
- Rollback is disabled by default in express mode.
Why it matters
Infrastructure as code tools often incur significant latency waiting for resource stabilization, particularly for services like CloudFront distributions requiring global propagation. This delay hinders rapid iteration, especially in development or when using AI agents for infrastructure generation. Express mode addresses this by completing stack operations as soon as resource configurations are applied, allowing background propagation to continue. This significantly shortens feedback loops for developers and automation, though the trade-off is the default disabling of automatic rollback, requiring manual intervention for failed deployments.
How to use it
Enable express mode via the AWS CLI or SDKs using --deployment-config '{"mode": "EXPRESS"}' for stack operations. For AWS CDK, use the --express flag with cdk deploy. This feature is available in all AWS Regions and requires no template modifications.
Bottom line: CloudFormation and CDK express mode accelerates deployments by skipping resource stabilization, but disables rollback by default.
Source (AWS What's New): AWS CloudFormation and CDK express mode speeds up infrastructure deployments by up to 4x