This is a Phase III, randomized, open-label, Global Study of Datopotamab Deruxtecan (Dato-DXd) in Combination With Rilvegostomig or Rilvegostomig monotherapy compared with Pembrolizumab monotherapy for the first-line treatment of participants with locally-advanced or metastatic non-squamous NSCLC with high PD-L1 expression (TC ≥ 50%) and without actionable genomic alterations.