Microsoft’s fiscal first-quarter 2027 capital expenditures, due for reporting on October 28, are guided above $50 billion following an accounting shift that extends the useful life of data-center leases to 25 years from 15, reducing reported figures relative to prior expectations of roughly $56 billion. This level reflects sustained AI infrastructure expansion, with recent quarterly spending already reaching $35–41 billion amid Azure revenue growth exceeding 40 percent and a contracted backlog surpassing $678 billion. Traders are monitoring lease commitments now totaling over $329 billion not yet commenced, alongside broader hyperscaler capex trends and free-cash-flow resilience despite elevated outlays. Key swing factors include any upward revisions to Azure demand forecasts or changes in lease accounting treatment ahead of the earnings release.