The document discusses how ecommerce companies need to evaluate cloud databases to handle high transaction volumes, real-time processing, and personalized customer experiences. It outlines how DataStax Enterprise (DSE), which is built on Apache Cassandra, provides an always-on, distributed database designed for hybrid cloud environments. DSE allows companies to address the five key dimensions of contextual, always-on, distributed, scalable, and real-time requirements through features like mixed workloads, multi-model flexibility, advanced security, and faster performance. Case studies show how large ecommerce companies like eBay use DSE to power recommendations and handle high volumes of traffic and data.