data center (DC)
A data center is a building where many computers, sometimes thousands, operate in one place: this is where data for internet services and AI is stored and processed.
In plain terms
The data center is the factory floor of the digital world. When you send a message, watch a movie, or ask a question to an AI chatbot, most of the work is not done by your phone but by machines lined up in a distant building.
Imagine it as a huge warehouse where the shelves hold not boxes but computers. These servers operate day and night, requiring continuous power, cooling, and security.
Due to AI, the role of data centers has grown. Training and running large language models daily requires special, power-hungry chips, so data centers specifically designed for AI are now being built. These can consume as much electricity as a small town.
How it works
- Servers line up in cabinet-like racks. A single room may contain hundreds of such racks, including machines filled with graphics processing units (GPUs) used for AI.
- A high-speed network connects machines to each other and the internet, so your request reaches its destination in a fraction of a second, and the response returns just as quickly.
- Machines generate immense heat, requiring continuous cooling with air or increasingly with liquid. Cooling accounts for a significant portion of power consumption.
- Power supply is redundant. If the grid fails, batteries immediately take over the load until the diesel generators start up, so the service does not stop.
- Operators use software to distribute work among machines and usually store data in multiple locations so that a failure does not cause data loss.
An everyday example
You ask an AI chatbot to summarize your lease agreement. The text travels from your phone to a data center thousands of kilometers away, where servers calculate the answer, and within seconds you are reading it.
Who is affected
A common misconception
Limits and risks
- Data centers consume vast amounts of electricity, and their cooling often requires significant quantities of water, which can strain local grids and water supplies.
- Despite multiple redundancies, outages still occur: if a major provider's data center goes down, many independent applications can become inaccessible simultaneously.
- If your data is in a data center in another country, different laws may apply to it, so for sensitive data, it is worth asking where it is stored.
- The capacity required for AI is expensive and concentrated in the hands of a few large companies, creating dependency for those who build on them.
Similar, but not the same
- cloud – Cloud is a rented service, while the data center is the physical building and hardware infrastructure on which that service runs.
- szerver – A server is a single computer, while a data center is the facility where many servers operate with shared power and cooling.
- supercomputer – A supercomputer is a system of many thousands of very tightly interconnected machines that work together on a single large, typically scientific computation. It too operates in a data center or machine room. A general-purpose data center, by contrast, serves many different clients and tasks at the same time.
Related concepts
digital infrastructure, computing capacity
AI data center, hyperscale data center, szerverterem, edge data center
cloud, szerver, GPU, supercomputer, data sovereignty
A brief history
The predecessors of data centers were the separate machine rooms of early computers, such as the ENIAC presented in 1946. Data centers in the modern sense, serving internet services, emerged in the 1990s with the mass spread of the internet.
Where things stand
Data centers have long been core infrastructure, but by the end of 2026, new, massive facilities are being built at an unprecedented pace due to AI. One major bottleneck has become power supply. According to the International Energy Agency's 2025 forecast, data center electricity consumption could more than double from 2024 levels to approximately 945 TWh by 2030.
In the news
- Activists break into Microsoft data centre construction site in AmsterdamNov 6, 2026 · Agent Age
- ECB may review banks' data center lending over AI riskNov 6, 2026 · Money
- Protests against AI data centers span 15 European countries, with Amsterdam construction site stormedNov 6, 2026 · Ipar
- Big tech firms and green groups are drafting joint US data center guidelinesNov 6, 2026 · Ipar
- Washington Post: data centers have only a marginal effect on electricity pricesNov 6, 2026 · Ipar
- Equinix plans $7 billion capex push and bets on smaller facilitiesNov 6, 2026 · Ipar
- ECB weighs review of bank lending tied to data centers over AI-related risksNov 6, 2026 · Ipar
- Hedge funds shed AI debt as $500 million data center loan package heads to auctionNov 5, 2026 · Money
Also known as
data center · data center · data centre · datacenter · szerverpark · szerverfarm · AI data center · DC
Sources
This entry was machine-edited and has undergone machine expert review; the “In the news” section updates automatically from Agent Age stories.