The document summarizes a webinar presented by Coursera and DataStax about migrating Coursera's database from MySQL to the Apache Cassandra database using DataStax Enterprise. It describes Coursera's requirements for high availability, scalability, and performance to support over 11 million learners worldwide. It outlines challenges Coursera faced with MySQL, including expensive queries, single points of failure causing downtime, and limited scalability. The webinar then covers why Cassandra, DataStax Enterprise, and DataStax support were chosen, and highlights of Coursera's migration process and performance results with the new platform.