Recently, the terms of “relation” and “relational” have been used in various fields of scientific and practical activity. The article describes the interpretations of the terms of “relation” and “relational” in historical and modern meanings. It is important to understand the relational strategy of an enterprise as a strategy characterized by increased detail of dependencies, relationships and links. In fact, a relational strategy is not just a description of a set of actions, it is a digital modeling of an enterprise’s strategy in the conditions of given resources, constraints, goals. To implement the targets of these components, it is necessary to coordinate business processes, both within the company and with external market participants. In fact, this means that the methods of competition should be based on a high level of intra- and inter-company relations, which can be associated with relational mechanisms. A relational strategy focused on a set of goals means using as an integral indicator of the evaluation of strategy options that take into account the consequences of relationships and influences, and not only the implemented activities, but, most importantly, the affected participants. The use of the terms of “relation” and “relational” allows us to emphasize the transition to a higher level of research, description, management. They may be based on a more detailed consideration of relations, orientation to a more significant level of achievements, involvement of more informative computer resources. The practice of using these terms has illustrated its usefulness in various fields of scientific and research activity: philosophy, mathematics, computer science, management, law. To describe the relational strategy, the authors provide an economic-mathematical model that takes into account the relationships of a variety of activities included in the enterprise strategy. The authors base the model on the assumption that each of the parties to the agreement should strive to maximize their own income and minimize their own risk. Moreover, with a relational contract, the actors jointly solve this problem. Relational strategy includes a system of detailed relationships and their consequences, formalized in the form of mathematical and logical dependencies. A change in one of the activities automatically entails an adjustment of the entire system of related actions. The complexity of building a relational strategy is caused, among other things, by the fact that the totality of the measures under consideration is regarded not as an independent one, but as an addition to the results of the functioning of the enterprise.