Techniques for management controllers are provided. In one aspect, a processor of a resource registration service of a management controller may receive, from a resource provider, a resource registration request to allocate a resource object in a data model. The resource registration request may include an indication that the resource object is to be joined to a public resource tree. The processor may then allocate the resource object within the data model. In allocating the resource object, the processor may update the public resource tree to link to the resource object based on the indication.