ashb commented on a change in pull request #8962:
URL: https://github.com/apache/airflow/pull/8962#discussion_r429921230



##########
File path: docs/concepts.rst
##########
@@ -116,6 +116,47 @@ DAGs can be used as context managers to automatically 
assign new operators to th
 
     op.dag is dag # True
 
+.. _concepts:functional_dags:
+
+Functional DAGs
+---------------
+*Added in Airflow 1.10.11*
+
+DAGs can be defined using functional abstractions. Outputs and inputs are sent 
between tasks using
+:ref:`XComs <concepts:xcom>` values. In addition, you can wrap functions as 
tasks using the
+:ref:`task decorator <concepts:task_decorator>`. Dependencies are 
automatically inferred from
+the message dependencies.

Review comment:
       that `XCom values`, then SGTM.




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