Suprihadi, Eddy Jesicca Deviyanti Th Arie Prabawati Sistem informasi bisnis dunia versi 4.0 ANDI, 2020 Sistem Informasi Sistem Informasi Teknologi Informasi Strategi Bersaing Hardware Software Wan Lan Vpn Customer Relationship Management (Crm) Erp Scm E-Commerce System Management E-Commerce Models Dss Ai Sdlc Keamanan Sistem Jaringan;Man