TY JOUR TI Development Trends and Efficiency Rating of Event Marketing in the Context of Digital Transformation KW event marketing KW hybrid events KW digital transformation KW marketing effectiveness KW event analytics JO Bulletin of Kemerovo State University. Series: Political, Sociological and Economic sciences AU Marchenko, D.A. AU Shadrin, V.G. PY 2025 IS 10 PB Kemerovo State University