# Custom Backends with Nacelle
Nacelle was built for custom, and we offer merchants an API to send data directly to Nacelle regardless of the source.
We encourage you to explore the Data Ingestion GraphQL API. The best way to get started is via our Custom Quick Start Guide and our Data Ingestion Reference Docs. To further explore integrations with custom PIMs, CMS' and other merchandising data sources, please find the relevant documentation below: