Today's businesses operate in a digital economy where downtime can be fatal, and modern databases must handle massive amounts of business-critical data while meeting demanding requirements for high availability, high performance, and disaster recovery. Enterprises now deploy multi-master databases across diverse geographies to ensure business continuity, with replication playing a key role in their effectiveness. In contrast to MongoDB's shortcomings, Couchbase's cross-datacenter replication (XDCR) technology provides a robust and flexible solution with peer-to-peer architecture, active-active configurations, independently scalable clusters, and simplified administration. Several customers are using Couchbase for complex global deployments that take advantage of multi-master bidirectional ring topology, and real-world examples demonstrate the elegance of XCR in action.