ETL Pipeline
Extract → transform → load with quality gates and observability.
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flowchart LR
S1[(Postgres)] --> Ext[Extract]
S2[(S3 events)] --> Ext
S3[(SaaS API)] --> Ext
Ext --> Land[(Raw / landing zone)]
Land --> Trans["Transform<br/>(dbt models)"]
Trans --> DQ{Data quality\ntests pass?}
DQ -- no --> Alert[Alert on-call]
DQ -- yes --> Mart[(Mart / warehouse)]
Mart --> BI[BI tools]
Mart --> ML[Feature store]
Mart --> Rev[Reverse ETL]