This paper presents the combination of two conceptual models used in the field of program evaluation. First, each model will be described. Their connection will be explained as well as the effects of using this combination on the level of involvement of the different actors concerned by an evaluation process. Then, examples of evaluative processes in which the combination of models was used will be presented. These examples will highlight the advantages of using the combined models on the development, the implementation, the sustainability and the effectiveness of a program or of an evaluation process in varied contexts.