ETL (Extract, Transform, Load) pipelines are a series of processes used to extract data from multiple sources, transform it into a standardized format, and load it into a target system for analysis and reporting. As organizations increasingly rely on data-driven decision-making, ETL pipelines have become a crucial component of modern data architecture, enabling businesses to integrate, process, and analyze large volumes of data from disparate sources, and are a key topic of discussion among data engineers and architects in the tech community.