The Application axis of Radiation Oncology segmentation classifies end‑use scenarios that allocate the bulk of equipment revenue. Cancer Treatment dominates, representing approximately 70 % of the market, because curative intent protocols across breast, lung, prostate, and head‑and‑neck malignancies require repeated high‑dose fractions and thus sustained hardware utilization. Palliative Care accounts for roughly 20 % and is characterized by shorter treatment courses aimed at symptom relief, driving demand for portable linear accelerators and simplified planning systems. Research applications, including clinical trials and pre‑clinical radiobiology studies, occupy the remaining 10 %; they stimulate niche purchases of specialized dosimetry tools and emerging radiopharmaceutical platforms. This Radiation Oncology segmentation reflects reimbursement structures, clinical guideline prevalence, and geographic disease incidence, all of which modulate each application’s contribution to total market size. As survivorship improves, the proportion of palliative and research usage is expected to rise modestly, subtly reshaping the revenue mix over the forecast horizon. Regulatory incentives for value‑based care further influence allocation across these segments.