AWS CloudFormation and CDK accelerate development feedback loops with pre-deployment validation on all stack operations

AWS CloudFormation Release Notes

AWS CloudFormation now provides immediate feedback on deployment errors, significantly reducing the time to discover preventable failures. Pre-deployment validation is now automatically run on Create Stack and Update Stack operations, catching common errors before resource provisioning begins. This accelerates development across all deployment workflows.

New validation checks include:

• Service quota limits: Warns when creating resources would exceed your account's service quotas.
• AWS Config Recorder conflict detection: Warns when your template adds Config rules to an account that does not have Config recording enabled, or defines a Config Recorder in an account where one is already active.
• ECR repository delete readiness: Warns when an ECR repository targeted for deletion still contains images.

When validation detects an issue, you can view errors using the DescribeEvents API or in the CloudFormation console. Each error includes the logical resource ID and property path for pinpointing and fixing the problem before any resources are provisioned.

What to do

• Review validation results in the CloudFormation console or via API.
• Fix errors before provisioning resources.
• Use the DisableValidation parameter or --disable-validation flag to skip validation for specific operations if needed.

Source: AWS release notes

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