This document discusses evaluating Apache Cassandra as a cloud database. It provides an overview of DataStax, the commercial leader in Apache Cassandra. DataStax delivers database products and services based on Cassandra. Cassandra is a free, distributed, high performance, and extremely scalable database that can serve as both a real-time and read-intensive database. The document outlines how Cassandra stacks up against key attributes of a cloud database such as transparent elasticity, scalability, high availability, and more. It encourages readers to download Cassandra to try in their own environments.