My experience:
Windows Server 2003-2016 with certifications in Active Directory, DNS, DHCP.
Firewalls Fortigate, CheckPoint, and others.
Office 365. (OneDrive, Exchange Online, etc..)
Web administration
Web Hosting
Windows Azure y Amazon Web Services. (Virtual Machine, infraestructure configurations, VPN)
CloudBerry software for backups.
Unitrends Backup.
Antivirus Eset Nod32, Symantec, TrendMicro.
PRTG administration.
Configurations: Routers, Switches and layer 3 devices.
CompTia A+ N+ CCNA2 MCP Windows Server Certifications, Windows Desktop Certifications.
Refers
[login to view URL]