is not a separate feature per se, but a design pattern and configuration discipline that restricts XCom usage to specific, well-defined channels. It combines several Airflow capabilities:
The primary way to handle these communications is through the xcom_pull() method airflow xcom exclusive
Airflow automatically pushes a task’s return value as an XCom with key return_value . For exclusivity, return only a primitive or a small dictionary. is not a separate feature per se, but