The application of EVM to efforts that may be categorized as “non-schedule-based”, i.e., those that do not ordinarily contain temporal work to create an unique result, could be considered ineffective.
“Non-schedule-based” efforts include services composed primarily of Level of Effort (LOE) activity, such as support services or continuous services. This continuity is opposed to the definition of project.
Almost every product of a project has a continuous operation phase after a transition stage. It's clever to divide this cycle in a "project phase" and an "ongoing operations phase" because of the different skills and techniques needed to manage it.
May we extend or add something to EVM to manage programs?. EV, PV, AC, BAC, ETC are part of an algebra created with the purpose of managing projects. It's clear to me that we need to measure non accumulated variables related to accumulated ones, in an integrated framework.