In the simplest and easiest way to explain it, it’s a carbon steel coated with a protective layer of zinc; this is to prevent rust and corrosion. Furthermore, this coating is applied through hot-dip galvanizing or electro-galvanizing, forming the barrier shielding the steel from moisture and environmental damage.
Galvanized steel is often used in applications like outdoor structures, fencing, and heavy-duty frameworks where protection against the elements is essential.