Infrastructure refers to the fundamental facilities and systems serving a country, city, or area, including the services and facilities necessary for its economy to function.
Common types of infrastructure include:
1. Transportation infrastructure: roads, railways, airports, etc.
2. Energy infrastructure: power plants, electrical grids, etc.
3. Water infrastructure: water supply, sewage systems, etc.
4. Digital infrastructure: broadband networks, data centers, etc.
5. Social infrastructure: schools, hospitals, etc.