TY JOUR TI Developing methods of evaluating online data for internet business promotion KW Internet promotion KW marketing event KW e-commerce KW Yandex.Direct KW Yandex.Metrica KW Google Analytics KW Google Ads KW conversion KW return on investment (ROI) KW transaction JO Vestnik of Astrakhan State Technical University. Series: Economics AU Kurcheeva, G.. AU Titova, V.V. PY 2022 IS 2022 PB Astrakhan State Technical University