1. Era UPT PUSKOM (MS DOS, Novell Netware, Foxpro 2.6, Windows 95/97/98/XP)
2. Era DSI / DSIK (Linux Redhat, Centos, VMWare, Windows Server, MySQL, PHP, Oracle, C#, C++, Delphi, PHP Ci, Laravel, cPanel Hosting, dll)
3. Era DSID (Proxmox, PostgreSQL, Microservices, Mobile Apps, dll)

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