What Is Critical Infrastructure?
A systems-level introduction to essential services, assets, networks and public dependencies.
Why this matters
A systems-level introduction to essential services, assets, networks and public dependencies.
Core system ideas
Critical infrastructure supports functions whose prolonged loss can seriously affect public safety, health, economic activity or social continuity.
What counts as critical varies by country, jurisdiction and community; sector lists are useful organizing tools rather than universal definitions.
The most important insight is interdependence: power, communications, water, transport, finance, healthcare and digital services often rely on one another.
What to review
Useful reviews usually combine service criticality, dependencies, condition, capacity, maintenance, alternate arrangements, restoration time and clear ownership rather than relying on one isolated metric.