No matter the sector, type, or philosophy of companies, there is strong evidence of sustainability awareness and environmental proactivity in industry. However, heterogeneity of firms shows that undertaking environmental actions may be a major challenge, where success is not guaranteed. This is a central issue for the ecological transition of industry and, unfortunately, it is an issue that cannot be tackled by a unique perspective. Still, for a transition occur, at least an initial and an envisaged state should be defined; and a procedure for transition between both must be formalized. In this sense, the literature provides methods to define, yet not to enhance the ecological states of firms, exposing a critical inattentiveness in the process for transformation and, in industrial diversity. To stablish the foundation for dealing with these issues, this paper first synthesizes these methods —which showed a strong alignment to Information science and strategic sustainability, and proposes a matrix for transition, composed of an informational and ecological dimension. Later, this matrix is used to propose and fuel a preliminary methodology delineated by different firms. Both are oriented to guide the ecological transition of all kind of companies.