Redfish is a DMTF standard specification and schema that specifies a RESTful interface and utilizes JSON and OData to help customers integrate solutions within their existing tool chains.
The following whitepapers describe the use of Redfish API for Integrated Dell Remote Access Controller (iDRAC).
Dell PowerEdge Redfish API Overview
RESTful Server Configuration with iDRAC REST API
Dell API Reference Guide for iDRAC firmware version 184.108.40.206
Dell API Reference Guide for iDRAC firmware version 220.127.116.11
Redfish Schemas for OEM developers