A serum-free platform refers to a cell culture system in which cells are grown in a medium that does not contain serum, which is a common component in traditional cell culture media. Serum-free platforms offer several advantages in terms of reproducibility, control over culture conditions, and reduction of variability. In summary, serum-free platforms offer a controlled and defined environment for cell culture, making them particularly valuable in the production of biopharmaceuticals, vaccines, and various cell-based applications where consistency, reproducibility, and control over culture conditions are critical.