Carlyle Group has acquired a majority stake in AI-driven IT consultancy Adastra Group, with Bloomberg estimating the deal at $400 million, including debt. Adastra, with over 2,000 employees, serves global clients like Audi, AstraZeneca, and HSBC. Founders retain minority stakes. Carlyle plans to fuel Adastra's next growth phase across AI, data, and cloud markets.