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The economic development of cities and regions is based on different drivers and levers that have been studied by a large body of work at different scales and in different contexts. The majority of this work questions the ability of territories to innovate and export in the face of a challenging global economic landscape. Under threat from environmental and climate challenges, new paradigms are emerging. No longer expressed in terms of competition, they are instead manifested through resilience and transition, thus forcing public and private actors to rethink what local means in our planning models. Using the income flow analysis of economic base theory, this article aims to better define these local issues, particularly regarding their productive dimension. As a reference to KIBS (knowledge-intensive business services), LIBS (local intensive business services) encompass productive activities that meet the needs of local businesses. We postulate that these local activities—invariably ordinary and lacking in technology—constitute an essential intermediation lever used to ensure territorial resilience and initiate ecological transition. After establishing the analytical framework, the article discusses, on the basis of three French areas, the LIBS intermediation effects in light of challenges involving territorial resilience.