TY JOUR TI Forecasting the level of digital development of the client as a tool for forming proactive offers of B2B products of telecommunication companies KW B2B marketing KW telecommunications companies KW Digital Maturity KW development forecasting KW proactive sales KW predictive analytics KW positioning innovation index KW customer lifecycle management (CLM) KW Big Data JO JOURNAL OF MONETARY ECONOMICS AND MANAGEMENT AU Orischenko, I.S. PY 2026 IS 0 PB ITBO University