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Developers of the smart grid have proposed a number of independent smart grid architectures. This has resulted in a lack of common vision and understanding of the common smart grid reference architecture. In particular, there is a lack of understanding of various inter-domain relationships and dependencies among technical and business domains within the smart grid. This paper presents an inter-domain analysis of these complex dependencies among the business and technical domains of the smart grid using Domain-Link Matrices. This inter-domain analysis clarifies and bridges the technical architecture to the business architecture. The aim is to maintain the rationale for the solutions developed in the technical domains in order to solve the problems of the business domains; and, as such, this analysis contributes toward further development and refinement of the smart grid reference architecture.