The acronym “ETL” stands for Extract, Transform, Load in the context of data and analytics.

Since your question is simple, here’s the ultra-quick version plus one-line context:

  • Extract – taking data out of source systems (databases, apps, files).
  • Transform – cleaning, reshaping, and standardizing that data.
  • Load – putting the processed data into a target system, usually a data warehouse or data lake, so it can be analyzed.

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