In order to remain competitive in a globalized environment and to always offer products and services more adapted to the customer’s expectations, the excellence of the supply chain is mandatory. Changes and pressures in the economic environment force supply chain models to change. This paper examines the different supply chain models in the literature, particularly those that integrate the complexity and the paradigm of System of Systems. These models were studied according to four main approaches: objects approach, agents approach, hierarchical approach and network approach. This paper also shows a new perspective of the SCOR (Supply Chain Operations Reference) model that includes the following six key processes: Plan, Source, Make, Deliver, Return and Enable. This new perspective emphasizes the System of Systems aspect of each of the SCOR model processes; an analogy with the Zara model has highlighted this prospect. From this study, we identify our supply chain model consisting of the following six subsystems: Plan, Source, Make, Deliver, Return and Enable.