This is the second episode of a series explaining the Cortex Data Framework, focusing on its newly implemented Change Data Capture (CDC) functionality. The episode highlights Cortex's expanded support for various databases, including Microsoft SQL Server, PostgreSQL, and MongoDB. The primary goal is demonstrating how developers can leverage CDC within Cortex Streams to respond to database changes and implement custom logic. Essentially, it's a tutorial explaining how to use a new feature to build more reactive applications.