So, first, the term “pro” on a coating is largely a distinction for marketing reasons. Usually, it will denote the higher quality product, or even just that one has certain benefits compared to another. This is a common practice across marketing, especially for the more “useful” products in life.
Now, the actual product. A ceramic coating is a form of ultra-hard clear coating that goes over your car’s paint. It is designed to trap in and maintain the paint job of your car. Imagine it like laminating your car. This works by using a material that will harden when exposed to air, with the industry standard being composed of silica suspended in a resin. This coating will be hard and protect your vehicle from scratches, UV damage, and other such mishaps. This won’t protect your car from major damage but will prevent most average wear to the vehicle. The higher quality coatings will also be hydrophobic, meaning that water will bead up and roll off the curves of your vehicle much easier than if it was not on.
Hopefully, this helped!