TY JOUR TI Digital marketing and specifics of its application in the B2B sector KW digital marketing KW B2B KW personalized marketing KW affiliate marketing KW SEM KW conversational marketing KW education marketing KW lead generation KW virtual reality KW multichannel marketing KW data visualization KW SEO KW artificial intelligence JO Economic and Social Research AU Spiridonova, G.V. AU Mrochko, V.L. PY 2026 IS PB National Research University of Electronic Technology