Alphabet’s latest earnings update reframed the AI capex debate: Google Cloud is now a much larger share of the company’s revenue than most investors previously modeled. Alphabet reported Google Cloud revenue grew 63% year over year to $20 billion, while Cloud operating income tripled to $6.6 billion and operating margin expanded to 32.9% in Q1. Meta and Microsoft also signaled higher AI spending, but investors reacted differently. Meta’s capex guidance jumped to as much as $145 billion for 2026, and its stock fell more than 6% after hours as component and data-center costs rose. Alphabet, by contrast, lifted shares about 7% after hours after CFO Anat Ashkenazi pointed to “unprecedented internal and external demand for AI compute resources,” along with a backlog that is translating into cloud revenue. Meta’s CEO Mark Zuckerberg pushed investors toward the long-term AI plan, describing return on investment as a “very technical question,” while tying cost drivers to data-center scale and custom silicon. Alphabet raised 2026 capex guidance to $180 billion–$190 billion and said 2027 capex is expected to rise versus 2026, underscoring the market’s continued sensitivity to execution benchmarks. For higher education and enterprise technology leaders, the immediate takeaway is capacity signaling: cloud backlog conversion, not just raw spending, is driving investor confidence around AI compute access and reliability.