ELT vs ETLTable Of Contents INTRODUCTION THE DATA CHALLENGE DATA WAREHOUSE AND DATA LAKE DEFINED ETL AND ELT DEFINED WHEN SHOULD WHICH TECHNOLOGY BE USED? KEY QUESTIONS SUMMARY 1 2 3 4 5 6 7 2For over a decade, the data world has been flooded with new technologies, methodologies and buzzwords to handle the growing amount of data, and leverage it to increase competitive advantage and ROI based on it. One of the ongoing debates in the field is centered around the following question: “Which is better: ETL or ELT?” In this paper, we’ll break down the concepts of ETL and ELT, explore whether data transformation should occur inside or outside the target database, and learn how all this relates to Data Warehouses and Data Lakes. We’ll also compare different scenarios and provide examp

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