Can someone explain what is ELT and how it works? or What is ELT and why is it important in data proc

what is elt? It’s ETL’s cooler younger sibling. Load raw data, then transform it *inside* the warehouse.

Pros: Scales like crazy. Cons: You need a solid warehouse (BigQuery, Redshift).

ETL’s better if you’re stuck with on-prem systems.

Tool recs: Fivetran for ELT, Informatica for ETL.