Create your first Channel
Create the general-purpose S3 bucket and the DLQ S3 bucket.
Create the IAM service role with the required permissions and trust policy (see IAM permissions).
In the Amazon MSK console, open your Express cluster, choose the Channel tab, and choose Create Channel (see Manage Channels for full steps).
Wait for the Channel to transition from Creating to Active.
Produce records to the topic and verify delivery by inspecting objects in the S3 bucket.