AWS Audit Manager now offers custom framework sharing so you have a secure and easy way to share custom frameworks across AWS accounts and regions. This enables instant access of your custom frameworks across multiple AWS accounts, without the need to manually copy or move underlying custom controls. Custom framework sharing provides quick access to the shared framework so that your users always see the most up-to-date and consistent information as it is provided by you. You can use the custom framework sharing feature on your AWS Audit Manager account at no additional cost.
Source:: Amazon AWS