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Explain XComs

General/Othereasy0.3 min readPremium
Frequency
Low
Asked at 1 company
Category
243
questions in General/Other
Difficulty Split
151E|43M|49H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Verizon
Key Concepts Tested
airflow
Expert AnswerPremium
60 wordsInterview-ready
**What**: XComs (Cross-Communication) in Airflow enable task-to-task data passing. Push via xcom_push() or return; pull via xcom_pull(). **Why**: Pass small metadata—file paths, counts, task IDs. NOT for large payloads—use S3/GCS and pass paths. **Backend**: DB default; custom (S3, Redis) for scale....
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