This includes everything from the rack itself to the PDU/switch/BMC, to the actual server blade and its chassis.
All presented in a nice package to give you a on-prem cloud-like experience.
you buy one or more of the data-centre-rack-sized computers, hook em up to each other / your datacentre network, and you now have essentially a cloud services platform like AWS/Azure, in your own datacentre, under your control, with full visibility of what every part of the platform is doing (hypervisor, underlying bare metal kernel, firmware, bootloader, etc), because it's ALL open source, written from the ground up by them
I think it's pretty neat!
https://oxide.computer/blog/the-cloud-computer
Basically they sell a pre-assembled rack of compute, storage and networking with their own open source management software to build on-premise clouds.
I have no idea why you'd buy that over any of the more established players that have a proven track record of being able to support these multi-million dollar machines for many years.