Change Data Capture (CDC) is a technique for capturing change events from a source database, which can then be used for various downstream applications like triggering events and analytics. The tutorial demonstrates how to set up a real-time CDC pipeline between ScyllaDB, a high-performance NoSQL database, and Redpanda, using a Debezium CDC connector compatible with Kafka Connect. This setup involves configuring Docker to run instances of ScyllaDB and Redpanda, setting up a standalone Kafka Connect cluster, and enabling CDC on ScyllaDB to capture changes in an e-commerce orders table. The tutorial guides users through inserting, updating, and tracking data changes in the orders table and accessing these changes through the Redpanda Console. The integration allows for seamless data streaming, enabling various use cases like asynchronous messaging between systems and data integration for creating data lakes.