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All around the world, huge data centres are being built to support the growing demand for internet services and artificial intelligence. These data centres are large buildings filled with powerful computers that help run everything from video streaming and online banking to AI tools and data storage. Most of the time, when you use an app or website, your information is processed in one of these data centres, which could be located anywhere in the world.

Recently, some technology experts have started to question whether we will always need such massive data centres. Aravind Srinivas, the CEO of Perplexity, believes that in the future, people will use advanced AI tools that can run directly on their own devices, like smartphones or laptops. This would mean less need to send data back and forth to remote data centres. Some companies, like Apple and Microsoft, are already making devices with special chips that allow AI to work on the device itself. This makes the AI faster and keeps your data more private. However, these devices are still expensive, and most people do not have them yet.

Despite these new ideas, the demand for data centres is not going down. In fact, many new data centres are being built, especially as AI technology continues to grow. These centres use a lot of energy and have a big impact on the environment. Some people are experimenting with smaller data centres. For example, in the UK, a small data centre the size of a washing machine is used to heat a public swimming pool. Another family uses a small data centre in their garden shed to warm their home. These examples show that data centres do not always have to be huge buildings.

Some experts think that having many small data centres, called edge data centres, could be a better solution. These smaller centres could be placed closer to where people live, which would make internet services faster and more reliable. Mark Bjornsgaard, who started a company that builds small data centres, believes that every public building could have its own data centre. These centres could work together and even provide heating as a bonus.

There are also new ideas about where to put data centres. Some companies are looking at putting small data centres in space, which could make the internet even more efficient. Others think that as AI tools become smaller and more focused, they could run on devices in your home, like your phone, TV, or internet router. This would mean less need for big data centres.

AI technology is also changing. At first, companies built very large AI models that could do many things, but they sometimes made mistakes. Now, more businesses are choosing to use smaller, custom AI tools that are designed for their specific needs. These tools are more accurate and use less energy. They can also be stored and run locally, instead of in a big data centre far away.

There are some concerns about security. Some people worry that having lots of small data centres could make it harder to keep information safe. However, others argue that if a small centre has a problem, it is less serious than if a big centre fails. There are also environmental benefits to using smaller data centres, as they use less energy and water.

In the future, we might see a mix of big and small data centres, along with smarter devices that can do more on their own. This could make technology faster, safer, and better for the environment. For now, though, large data centres are still a key part of how the internet and AI work.