Couchbase Server's SDKs have evolved significantly over time, streamlining complex operations and improving consistency across versions. The transition from SDK 1.0 to SDK 3.0 reflects enhancements in handling data with Couchbase, from basic read/write operations using the Memcached protocol to supporting advanced features like N1QL for querying JSON documents and Role-Based Access Control. SDK 3.0 introduces Scopes and Collections, optimizing resources for multi-tenancy and microservice architectures, and aligns with Couchbase Server 6.5+ to offer a more intuitive programming model. All SDKs adhere to Semantic Versioning, which guides the release process with distinctions between major, minor, and patch updates. This version also emphasizes usability by refining overloaded interfaces and enhancing cross-SDK conformance, while retaining familiar structures like Cluster and Bucket objects. The new architecture facilitates more efficient Key/Value operations at the Collection level and supports global queries through the Cluster object. The release of SDK 3.0 includes alpha versions available via NuGet, enabling developers to leverage these improvements while acknowledging feedback for future iterations.