Embodiments for optimizing dynamic resource allocations in a disaggregated computing environment. A data heat map associated with a data access pattern of data elements associated with a workload is constructed. A locality of the data elements associated with the workload within the disaggregated computing environment is determined using the data heat map. Particular resources within pools of resources are assigned to a dynamically constructed disaggregated system in real-time based upon the locality of the data elements in relation to other ones of the resources within the pools of resources such that the dynamically constructed disaggregated system executes the workload using an optimized set of the particular resources.