ERPNext as backend, linked with commercial POS, e-commerce, mobile platforms as frontend?

Has anyone had experiences or recommendation on using commercial frontend platforms (POS, e-commerce, mobile app)? I have this requirement from a prospect for complete omni commerce. Utilizing mobile/e-commerce, pick in store, social media, email/WA/push msg automation, and all 360 degree interactive digital experiences with advanced technology (cashless, cardless, cashierless, etc). I’m not sure if ERPNext’s front-end could keep up with the requirements, but I wanted to utilize as much as ERPNext backend (inventory, purchase, selling, accounting, HR, etc).

@milanissimo Please share experience. Have you tried any?