What are abstract factory patterns and how do abstract classes/interfaces fit in?

• Abstract Factory creates families of related objects.
• Interfaces/abstract classes define product contracts, factories implement them.

interface IButton { void Render(); }
class WinButton : IButton { public void Render() =>

Console.WriteLine("Windows Button"); }

interface IGUIFactory { IButton CreateButton(); }
class WinFactory : IGUIFactory { public IButton CreateButton() =>

new WinButton(); }