Couchbase has introduced a feature called 'Collections' in its 6.5 Developer Preview, aiming to enhance data organization and processing efficiency by grouping similar documents within a single bucket. Collections, akin to tables in relational databases, provide logical data containers that allow for better data management and finer access control granularity, which is beneficial for multi-tenant and microservices applications. This feature facilitates the separation of data types, improves indexing scalability, and simplifies query construction. Additionally, the Developer Preview supports operations on collections and scopes, though role-based access control at these levels will be available in future versions. While the current integration for Couchbase Mobile is limited to the Default Collection, future updates are expected to enable synchronization of documents within specific scopes or collections.