AWS Resource Access Manager (AWS RAM) now supports higher default quotas to help you scale your resource sharing. AWS RAM helps you securely share your resources across AWS accounts, within your organization or organizational units (OUs), and with AWS Identity and Access Management (IAM) roles and users for supported resource types. For each AWS Region in an account, you can now share up to 25,000 resources and share resources with up to 25,000 principals. Additionally, you can create up to 25,000 resource shares per AWS Region in an account. For each individual resource share, you can share up to 5,000 resources and share resources with up to 5,000 principals.
Source:: Amazon AWS