Databricks Free Edition runs on serverless compute due to which we do not have access to the Spark UI, including the DAG visualization.
Spark UI (with DAG, stages, tasks, jobs, and executor tabs) is traditionally accessed via attached interactive clusters. Serverless compute, as used in the Free Edition, abstracts the underlying infrastructure. You donโt get visibility into low-level cluster details like executor memory, task distribution, or Spark DAGs. The "Compute" tab, where you would normally click into a cluster to open the Spark UI, is not available or limited in the Free Edition.