TY JOUR TI CURRENT TRENDS AND APPROACHES OF ENTERPRISES TO INVESTING IN MARKETING KW investment in marketing KW modern trends of investment in marketing KW marketing strategies KW technological changes KW globalization KW consumer market KW economic policy KW competitiveness KW digitalization KW Big Data KW CRM KW artificial intelligence KW marketing automation KW personalization KW mobile marketing KW omnichannel strategies KW social responsibility KW sustainable development KW chatbots KW analytics KW ROI KW CAC KW CLV KW KPI KW customer experience KW marketing technologies KW marketing metrics KW online advertising KW digital platforms KW UX analytics JO MOSCOW ECONOMIC JOURNAL AU Teslenko, D.A. AU Liulin, P.B. PY 2025 IS 10 PB Electronic science