1. One or more computer-storage media having computer-executable instructions embodied thereon that, when executed, perform a method for converting a hardware inventory into a fabric-computing cluster (FCC), the method comprising: establishing a communicative coupling between a user device and the hardware inventory, wherein the hardware inventory includes a plurality of computing units that are configured to provide additional compute or storage capacity to a data center; provisioning the plurality of computing units with software that allows the hardware inventory to function as an FCC of the data center, wherein provisioning comprises: (a) deploying a computing fabric to the plurality of computing units, wherein the computing fabric enables the plurality of computing units to interact as a unified logical system; and (b) deploying core infrastructure services to run on top of the computing fabric, wherein the core infrastructure services represent operating-system-level components that provide underlying support of applications running on the FCC; and configuring the hardware inventory to behave as the FCC of the data center, wherein configuring comprises applying a first set of configuration settings to the computing fabric.