Treat data engineering as product/service, rather than process 
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  - author: Yen
 
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Video
Key Takes Away
  - Understand the data consumers
 
  - Validation
 
  - Keep the raw data and intermediate steps data
 
  - Validate input and output
 
  - Monitoring is part of the product
 
Ref
  - https://easydata.engineering/data-engineering-principles-according-to-gatis-seja
 
  - https://medium.com/@rchang/a-beginners-guide-to-data-engineering-the-series-finale-2cc92ff14b0