Version 1 of the AWS Cloud Development Kit (AWS CDK) has reached end-of-support

Since its introduction in 2018, AWS CDK has gained significant traction among developers for building Infrastructure as Code solutions. As technology advances and new features emerge, it is inevitable that older versions of tools must reach their end-of-support.

As of June 1, 2023, AWS CDK v1 has officially reached its end-of-support. Consequently, AWS will no longer provide maintenance, updates, patches, or technical support for this version of the CDK. While the existing releases will remain accessible through public package managers and the code will still be available on GitHub, using the older AWS CDK v1 could expose your code to security vulnerabilities and unaddressed bugs. Moreover, as the technology landscape evolves, new AWS services and features may not be compatible with the outdated version. This could result in compatibility issues, lack of support for newer services, and missed opportunities to leverage the latest innovations from AWS.

To mitigate the risks associated with using an unsupported AWS CDK version and to benefit from the inclusion of new features and capabilities, we strongly recommends that you transition to AWS CDK v2 without delay.

AWS CDK version 2 (v2) provides improved features, enhanced performance, and continued support from AWS. By embracing the latest version of AWS CDK, developers can ensure the security, compatibility, and stability of their infrastructure as code solutions on AWS. Moving to AWS CDK v2 is typically a straightforward process for most projects. It involves a one-time, secure re-bootstrapping of your AWS accounts, along with updating dependencies and making changes to import statements.

To learn more, refer to the following resources:

• To identify stacks deployed with AWS CDK v1, use the awscdk-v1-stack-finder utility.
• To compare AWS CDK v1 and v2, consult the “Migrating to AWS CDK v2” section in the AWS CDK Developer Guide. It provides the necessary information for a smooth transition between the two versions.
• Connect with the community in the cdk.dev Slack workspace.
• Open a discussion or issue on GitHub if you have questions when migrating, or run into issues.