dlt is an open-source library that enables the creation of custom destinations for Reverse ETL (Extract, Transform, Load) pipelines. It provides a structured framework for managing batch processing, error handling, and retries through its `@dlt.destination` decorator. This simplifies the process of integrating data into various destinations, allowing developers to focus on implementing custom business logic and adding value. dlt facilitates efficient handling of large data loads through chunking and batching, ensuring optimal use of computing resources. It also supports easy scaling and adjustments, making maintenance and updates straightforward. By using dlt, developers can build faster, more reliable, and scalable Reverse ETL pipelines with Python.