Major trends in big data, web/cloud, mobile, and unstructured data are driving demands for new database solutions. Relational databases struggle to meet today's requirements for sub-millisecond response times, massive scalability, and handling unstructured data at high speeds. Couchbase is a NoSQL database that addresses these demands through its flexible data model, consistent high performance at scale, high availability, easy and affordable scalability, and ability to function as both a cache and primary database. It allows for data consolidation, online upgrades and operations, and simplified administration through built-in tools and APIs.