Pfizer is a research-based biopharmaceutical company engaged in the discovery, development, manufacture, and distribution of healthcare products. It operates in three segments: Biopharma, PC1, and Pfizer Ignite. The Biopharma segment focuses on the manufacture, marketing, sale, and distribution of biopharmaceutical products. The PC1 segment specializes in the contract development, manufacturing, and supply of specialty active pharmaceutical ingredients. The Pfizer Ignite segment provides strategic guidance and end-to-end R&D services.