A very specific type of data center called a scaleable private data center -- mainly used by one entity, one private purpose, designed to be infinity sized-up. Not to be confused with other valuable purposed data centers. Some examples include...

• telecommunications public sector (911, gov't, schools, local tv & radio)
• telecommunications private sector (global phone, tv, radio, satellite uplinks)
• internet services (aws, cdn, db, backends)

You can generally tell which is which. A properly planned civil infrastructure takes years or decades to plan. The other is a rush "fly-by-night" build.