IT Fundamentals · Concepts
IT Infrastructure
The compute, storage, network and platform foundation on which applications and data depend.
FoundationalUpdated 2026-09-01
Overview
Infrastructure covers servers and virtualization, storage and backup, network devices and circuits, data centre or cloud hosting, and the operating systems and platform services that applications run on.
It is judged on capacity, resilience, performance, security posture and cost. Infrastructure decisions are long lived, so architectural discipline pays back over years.
