Vaccines market taxonomy mirrors the biopharma framework but emphasizes distinct application sub‑segments such as prophylactic immunization for infectious diseases, therapeutic vaccination for oncology, veterinary vaccines, and pandemic‑response platforms. Prophylactic vaccines represent the bulk of sales, driven by routine childhood and adult immunization programs; therapeutic cancer vaccines, though smaller, are growing as checkpoint‑inhibitor combinations mature; veterinary vaccines address livestock health and contribute a stable revenue stream; pandemic‑response platforms, exemplified by mRNA technology, have surged post‑COVID‑19, reshaping investment priorities. The types dimension differentiates vaccine products by technology: live‑attenuated, inactivated, subunit, viral‑vector, mRNA, and DNA vaccines. Live‑attenuated and subunit formats retain the largest market share due to long‑standing regulatory pathways, whereas mRNA and viral‑vector types exhibit the highest growth rates, expanding the overall market size. By delineating application and type sub‑segments, the analysis quantifies each component’s share of the total vaccines market, reinforcing the relevance of precise market taxonomy for stakeholders.