AntoniusFelix2

marketing selling business customer service sales salesforce salesman management penjualan history how nonprofit fundamental strategy social media marketing salesservice prospecting customer digital marketing prospecting knowledge relationships customer relationship management customer experience pelanggan kegembiraan layanan psychology services satisfaction industry 4.0 commerce businesstobusiness b2b ecommerce customer satisfaction customer delight industry omzet kpi sales management management sales marketing management manajemen penjualan