1. An apparatus comprising a processor and a storage to store instructions that, when executed by the processor, cause the processor to perform operations comprising: maintain, within one or more storage devices, a federated area to store multiple data sets, multiple job flow definitions, multiple task routines, multiple result reports and multiple instance logs; provide, on a network, a portal to control access by a remote device to the federated area via the network; receive, at the portal, and from the remote device via the network, a first request to execute at least one task routine stored in the federated area to perform at least one corresponding task of a job flow specified in a job flow definition stored in the federated area with at least one data set stored in the federated area, wherein the first request specifies the job flow definition and the at least one data set; retrieve the job flow definition from among the multiple job flow definitions stored in the federated area; retrieve the at least one data set from among the multiple data sets stored in the federated area; determine whether there are one or more instance logs among the multiple instance logs stored in the federated area that were each generated by a previous performance of the at least one task of the job flow with the at least one data set; in response to a determination that there is just one instance log among the multiple instance logs stored in the federated area that was generated by a previous performance of the at least one task of the job flow with the at least one data set, the processor is caused to perform operations comprising: retrieve, from among the multiple task routines stored in the federated area, a version specified by the one instance log of each task routine of the at least one task routine; execute the retrieved version of each task routine of the at least one task routine to perform the at least one corresponding task of the job flow with the at least one data set to generate a new result report and a new instance log; store the new result report among the multiple result reports in the federated area; store the new instance log among the multiple instance logs in the federated area; and provide access to the new result report to the remote device via the network; in response to a determination that there is no instance log among the multiple instance logs stored in the federated area that was generated by a previous performance of the at least one task of the job flow with the at least one data set, the processor is caused to perform operations comprising: retrieve, from among the multiple task routines stored in the federated area, a most recent version of each task routine of the at least one task routine; execute the most recent version of each task routine of the at least one task routine to perform the at least one corresponding task of the job flow with the at least one data set to generate a new result report and a new instance log; store the new result report among the multiple result reports in the federated area; store the new instance log among the multiple instance logs in the federated area; and provide access to the new result report to the remote device via the network; and in response to a determination that there is more than one instance log among the multiple instance logs that were each generated by a previous performance of the at least one task of the job flow with the at least one data set, the processor is caused to provide, via the network, an indication of the more than one instance log to the remote device.