ABC has created a multi-tenant Learning Management System (LMS). The application is hosted for five different tenants (clients) in the VPCs of the respectiveAWS...

ABC has created a multi-tenant Learning Management System (LMS). The application is hosted for five different tenants (clients) in the VPCs of the respectiveAWS accounts of the tenant. ABC wants to setup a centralized server which can connect with the LMS of each tenant upgrade if required. ABC also wants to ensure that one tenant VPC should not be able to connect to the other tenant VPC for security reasons.
How can ABC setup this scenario?