IT infrastructure refers to the composite hardware, software, network resources and services required for the existence, operation and management of an enterprise IT environment. It allows an organization to deliver IT solutions and services to its employees, partners and/or customers and is usually internal to an organization and deployed within owned facilities.
Typically, IT infrastructure consists of the following components:
• Hardware: Servers, storage, back-up, data centres, switches, hubs and routers, etc.
• Network: Network enablement, Internet connectivity, firewall and security
• Software: Enterprise resource planning (ERP), customer relationship management (CRM), productivity applications