Redfish
Beginner
A shared language that software uses to check on any server’s health and give it commands.
Novice
A DMTF standard API for managing servers. Software sends ordinary web requests (HTTPS) to the BMC and gets back JSON documents describing sensors, power supplies, fans and more.
Expert
A RESTful, schema-backed (OData v4) interface over HTTPS, designed as a secure, scalable replacement for IPMI-over-LAN. Resources such as Chassis, Sensors and PowerSubsystem are linked by @odata.id URIs.
Explained in Board and server (Systems).
See also: BMC (baseboard management controller).