TY JOUR TI FEATURES OF THE APPLICATION OF BUSINESS MODELS IN THE CONDITIONS OF DIGITALIZATION OF ECONOMIC RELATIONS KW act of purchase and sale KW business ecosystems KW breakthrough innovations KW consumer behavior KW goods KW services KW digitalization of economic relations KW digital platforms JO Trade, service, food industry AU Ananina, R.F. PY 2021 IS 1 PB Siberian Federal University