Migrating from MongoDB to Couchbase can be a significant undertaking, but with careful planning and the right tools, it can unlock performance, scalability, and flexibility gains for applications. Understanding the key differences between MongoDB and Couchbase, including their data models, query languages, and architectures, is crucial for a successful migration. The process typically involves defining migration goals, choosing a data migration approach (direct dump and load or incremental live synchronization), updating application code to use Couchbase's SQL++ query language, and employing frameworks such as Spring Data Couchbase or Ottoman.js to ease the transition. Post-migration steps include performance tuning and testing, cutting over to production, and decommissioning MongoDB. By leveraging Couchbase's features, such as real-time analytics, AI services, and enterprise-grade mobile sync, organizations can unlock a modern database platform that goes beyond what MongoDB offers.