Interorganizational interaction is an intangible asset that ensures effective functioning and sustainable competitive advantage of enterprises in the long term, including the tourism and recreation industry. In the new business environment, the success of tourism and recreation enterprises is highly dependent on the effectiveness of interaction with business partners that form the value chain of the tourism product. This actualizes the importance and necessity of the appearance of relevant

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... etical and espirical research.The authors presented a literature review that allowed us to form a list of the advantages of interorganizational interaction as a result of collaboration in the tourist and recreational network. At the same time, the authors conclude that the assessment of real economic effects as a result of the collaboration of enterprises in the tourism industry currently remains an insufficiently developed area of knowledge of new economic sociology. In the article, the phenomenon of interorganizational interaction in the tourist and recreational network is investigated in the focus of the emerging synergistic effects. Based on the use of the cost-based approach, the authors have developed a method for assessing the synergistic effect of inter-organizational interaction in the tourist and recreational network. The proposed method was tested on the example of a large tourist and recreational network operating in the Irkutsk region. The approach presented by the authors to assessing the synergistic effect of interorganizational interaction in the tourist and recreational network of the territory can be used both when assessing the feasibility of creating a new tourist and recreational network as a result of combining autonomous tourist and recreational enterprises, and when expanding the existing alliances of the tourist and recreational sphere by increasing the number of new enterprises in its structure