Airbyte is an open-source ELT platform designed to facilitate data integration by connecting a wide range of data sources to various destinations. It comes with an extensive library of connectors for extracting data and loading it into databases, data warehouses, or data lakes. Airbyte supports both batch data synchronization and CDC (Change Data Capture) for real-time updates, enabling quick data transfer and incremental data loading. With its modular connector-based architecture, it allows for custom connector development and simplifies the process of building data pipelines.