IT Explanations

Clear explanations of IT concepts, protocols, architecture and enterprise technologies.

Concepts, protocols and architecture
Infrastructure, cloud and security
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For sysadmins, IT admins and MSPs

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Understand the technology behind your infrastructure.

1 explainer foundData WarehouseRemove topic filter Clear filters

The ETL process, with data extracted from multiple sources, transformed and validated.

What Is ETL? Extract, Transform, Load Explained

ETL extracts data from sources, transforms it, and loads it into a warehouse. Covers the three stages, ETL vs ELT, tools (SSIS, ADF, Airflow, dbt), and when to use each approach. Essential for data engineering and business intelligence.

Jul 20, 20267 min readintermediateEmanuel De Almeida