Couchbase Server 7.0 introduces Scopes and Collections, a new feature designed to logically organize data within the database, which is particularly beneficial for users looking to map legacy RDBMS to a document database, or consolidate microservices and tenants into a single Couchbase cluster. The article provides a comprehensive guide on migrating to Scopes and Collections, outlining steps such as upgrading to the latest version, planning a migration strategy, and migrating application code and data. It explains how to utilize the Couchbase SDK, N1QL, and cross data center replication (XDCR) for either offline or online data migration. The guide also details the creation of Scopes, Collections, and indexes, as well as the implementation of a database security strategy using role-based access control (RBAC) at the Scope and Collection levels. The feature allows for more granular control over data management and aims to reduce total cost of ownership (TCO) by increasing data density within clusters. While Scopes and Collections facilitate better data organization and access control, the article also notes that Sync Gateway support for this feature is still pending, which poses limitations for applications needing synchronization based on Scopes or Collections.