Couchbase Analytics is a new service available in Couchbase Server 6.0, enabling developers to query large datasets without creating indexes. The service uses the Couchbase Go SDK and provides features such as ad-hoc queries, filtering, and aggregation across various fields. Developers can use the analytics service to analyze data from their applications, including retrieving dynamic data through a web server. A graphical user interface is also provided for interactive exploration of the data. The analytics service allows developers to quickly analyze datasets with various metrics without requiring index creation, enhancing the capabilities of the Couchbase platform.