Axios Pro Exclusive ContentIllustration: Annelise Capossela/Axios.Phaidra, whose software manages cooling and energy consumption across sprawling data center campuses, closed over $50 million in Series B funding from Nvidia and the Collaborative Fund, CEO Jim Gao tells Axios Pro. Why it matters: As data centers reach multi-gigawatt scale, efficiency savings produce significant cost reductions.Go deeperAI's trillion-dollar data center betIllustration: Sarah Grillo/AxiosWith their latest deals to ...