Exposing the Couchbase database on the public network allows clients to access it without having to establish a VPN to a Kubernetes instance. This is achieved through various use cases such as Cross-Data Center Replication (XDCR) for High Availability and Disaster Recovery, Client SDK access to Couchbase cluster, and Database-as-a-Service (DBaaS) platforms. The Kubernetes External DNS solution manages external DNS records in an autonomous way from within a Kubernetes cluster, allowing clients to discover resources via the external DNS provider. This solution enables the creation of public DNS records for the Couchbase cluster without requiring manual configuration of Kubernetes resources and DNS records. By using this approach, developers can access their Couchbase cluster through a publicly addressable domain name or subdomain, improving scalability and usability.