Classes are vital aspects of OOP. A class is like the "blueprint" of an object. An object has the properties of a class, but the characteristics are not defined within the class itself. As each object can be different, they define their own characteristics.
Public Class Person End Class Public Class Customer End Class
A class can also contain subclasses. A subclass inherits the same properties and behaviors as its parent class, but can have its own unique properties and classes.