Inclusion Criteria:

* Age ≥ 18 years old at the time of enrollment
* Eastern Cooperative Oncology Group (ECOG) performance status score of 0 or 1
* Expected life expectancy ≥ 3 months
* Metastatic (Stage IV) NSCLC
* Histologically or cytologically confirmed squamous or non-squamous NSCLC
* Recorded measurement of the Tumor Proportion Score (TPS) for PD-L1 expression, irrespective of the PD-L1 expression, prior to randomization
* At least one measurable noncerebral lesion according to RECIST 1.1
* No prior systemic treatment for metastatic NSCLC

Exclusion Criteria:

* Histologic or cytopathologic evidence of the presence of small cell lung carcinoma
* Known actionable genomic alterations (EGFR, ALK, ROS1, and BRAF V600E) or genes for which first-line approved therapies are available.

* For non-squamous histology patients, actionable driver mutation testing results are required before randomization.
* Has received any prior therapy for NSCLC in the metastatic setting
* Tumor invasion, encasement of organs (e.g. heart, trachea, esophagus, central bronchi), or major blood vessels (e.g aorta, central veins), if poses a significant increased risk of bleeding.

Note: Other protocol defined Inclusion/Exclusion Criteria may apply.

Eligibility last updated 09/16/2025. Questions regarding updates should be directed to the study team contact.