Extract, Transform, Load - process of moving data from various sources to a data warehouse. Like sorting, cleaning, and organizing items from different stores into one organized warehouse.
Companies use ETL to combine sales data from different regions into a single database for analysis.
These are managed data-integration services that build ETL/ELT pipelines: connect to sources, transform data, orchestrate workflows, and load into analytics stores (e.g., data warehouses/lakes).