Create IAM policies that include the required permissions. Include the aws:PrincipalTag condition key.

Create permission sets. Attach an inline policy that includes the required permissions and uses the aws:PrincipalTag condition key to scope the permissions.

Create a group in the IdP. Place users in the group. Assign the group to accounts and the permission sets in IAM Identity Center.

Create a group in the IdP. Place users in the group. Assign the group to OUs and IAM policies.

Enable attributes for access control in IAM Identity Center. Apply tags to users. Map the tags as key-value pairs.

Enable attributes for access control in IAM Identity Center. Map attributes from the IdP as key-value pairs.