Yes, cluster DNS of services.
The external-dns controller automatically setups DNS records for these environments.
Use very short TTLs on SOA records (E.g. 60 seconds or less) Delegate Zones to every organization or use dedicated zones per organization (e.g. cloudposse.com, cloudposse.net, cloudposse.org) Use ALIAS records to map zone apex record to ELBs
The DNS controller picks up new DNS entries almost immediately and registers them with Route 53.