Amazon is the latest US tech giant to announce a huge increase in spending on artificial intelligence (AI) and infrastructure. Reporting its annual results on Thursday, Amazon said it will put $200bn (£147.7bn) this year into building out its business, with much of it going on AI. This is a big increase from last year, when it spent $125bn. However, the announcement did not appear to be welcomed by investors, as its shares fell by more than 11% in after-hours trading.

Over the past week, Amazon, Meta, Google, and Microsoft have collectively announced plans to invest $650bn into AI and related projects this year, with Amazon's figures making it the most aggressive investor in AI among the Big Tech companies. The scale of AI investment announced by these firms dwarfs the economic output of many countries, raising both excitement and skepticism.

Amazon plans to spend extensively on areas like AI, chips, robotics, and low earth orbit satellites, but CEO Andy Jassy emphasized that the bulk of the spending will focus on AI. It's an unusual opportunity, Jassy said, suggesting that AI will become profitable in the future. He reaffirmed the company's commitment, stating, We're going to invest aggressively.

Despite the ambitious plans, fears regarding a potential bubble in the AI market are mounting. The Bank of England has warned of a potential sharp correction in valuations, with share prices mirroring those before the dotcom crash. Cisco's CEO has indicated that the transition to AI will generate both significant winners and some losers in the tech space.

Alongside these developments, Amazon's financial strategy includes looking at cost reductions elsewhere, including recently laying off thousands of employees. This trend of increased investment in AI is echoed by leaders in other tech firms as they navigate the uncertainties accompanying AI's growth in the market. Although predictions suggest that AI could dramatically alter operational dynamics within businesses, the challenges ahead prompt caution among investors.