"Sovereign AI is a relatively new term that's emerged in the last year or so," Chris Gow, IT networking giant Cisco's Brussels-based EU public policy lead, told CNBC.

Currently, many of the biggest large language models (LLMs), like OpenAI's ChatGPT and Anthropic's Claude, use data centers based in the U.S. to store data and process requests via the cloud.

This has led to concern from politicians and regulators in Europe, who see dependence on U.S. technology as harmful to the continent's competitiveness — and, more worryingly, technological resilience.