Infrastructure Systems Administration and Support, outlines the comprehensive responsibilities of an IT infrastructure administrator. These duties encompass the administration and monitoring of server environments, which includes both Windows and Linux operating systems across on-premises and cloud platforms. A significant portion of the role involves managing core network services such as Active Directory, DNS, and DHCP, alongside overseeing physical network hardware like routers and firewalls. Furthermore, the position requires a focus on maintaining robust security protocols, including managing patches, backups, and disaster recovery plans, while also ensuring compliance with standards like ISO 27001. The administrator is also responsible for supporting enterprise applications like Microsoft 365 and Azure, coordinating with external vendors, and maintaining detailed IT documentation for operational efficiency.