A method, computer program product, and system performing a method that includes a processor(s) of a local/private computing system (LPCS) receiving, via a public computing system and a communication network, on behalf of a user of the public computer system, a request to use computing resource(s) belonging to the LPCS. The processor(s) determine a set of usage parameters comprising a first usage limitation, with the first usage limitation including a first limitation type and first limitation value, and with the first usage limitation defining a limit on usage of the computing resource(s) on behalf of the user. The processor(s) receives, via the public computing system and the communication network, a workload of the user. The processor(s) processes the workload, which includes the processor limiting, by machine logic, usage of the resources(s), on behalf of the user, in accordance with the usage parameters.