Amazon Managed Streaming for Apache Kafka (MSK) is a fully managed, highly available service that makes it easy to build and run applications that use Apache Kafka. MSK supports integration with Couchbase using the Amazon MSK Connect feature and the Couchbase Kafka connector plugin. This allows customers to reliably stream data to and from Apache Kafka at scale. The process involves setting up an Amazon MSK cluster, creating a sink and source connector for Couchbase, and configuring the connectors to work together seamlessly. The use of MSK and Couchbase can help developers build real-time streaming data pipelines and applications with ease.