InfluxDB Cloud Dedicated is a hosted and managed InfluxDB Cloud cluster dedicated to a single tenant, designed to handle high write and query loads. It uses the Java Flight SQL client, part of Apache Arrow Flight, for efficient data transmission over gRPC. The tutorial assumes an existing InfluxDB Cloud Dedicated account and provides step-by-step instructions on reading data from the cloud using the Java Flight SQL client, including creating a source database, target database, source token, target token, and downsampling query. The client injects header metadata in every request and sets up authentication using a BearerCredentialWriter. After successful authentication, it executes a query, retrieves the stream data of the query from the endpoint, creates an InfluxDB WriteApi function, and writes the prepared point into the target database. The tutorial also covers visualizing the data with Grafana and querying the data with SQL using the Flight SQL protocol.