In today's data-driven world, APIs are the cornerstone of data sharing and accessibility. They offer a structured way for different applications and systems to communicate. APIs are key for teams to share or access data stored in databases.

At its core, ETL ( Extract, Transform, Load) is the process of collecting raw data from various sources, transforming it into a usable format, and loading it into a data warehouse for consumption. In 2015, Segment launched its Data Warehouse Destination product, which allowed businesses to seamlessly send data to their data warehouses.

With advancements in Data Warehouse capabilities, there is a trend to access data directly from the Warehouse. And as the data landscape continued to evolve, a new paradigm emerged: Reverse ETL.