Couchbase Server 6.5 introduces support for distributed multi-document ACID transactions, which simplifies application development by allowing the database to manage transaction recovery semantics instead of the application tier. This new feature extends Couchbase's traditional single-document ACID capabilities to multiple documents across various nodes, maintaining atomicity, consistency, isolation, and durability (ACID) guarantees. The transactions are executed through Couchbase SDK APIs, offering robust error handling with built-in retries for failures in a distributed system. The implementation avoids the limitations of the traditional two-phase commit (2PC) protocol by using smart clients that track transaction states, eliminating the need for global coordination or sharding. This approach ensures high availability and scalability without performance penalties, allowing applications to selectively use ACID features alongside NoSQL's speed and flexibility. Couchbase's architecture enables partition-agnostic transactions, supporting modern applications with the combined benefits of NoSQL and traditional database transactional capabilities. Future enhancements include N1QL support for transactions and features aiding the porting of relational database procedures to Couchbase.