00650naa#a2200169#i#450# EN\\bibl\126334 20260710021922.5 2782-4586 20260630b2026####ek#y0engy0150####ca RU Forecasting the level of digital development of the client as a tool for forming proactive offers of B2B products of telecommunication companies Journal article Moscow ITBO University 2026 6 с. Journal article local Экономические науки в целом. Политическая экономия. 330 Orischenko Ivan Sergeevich zhpi.ru