• Last-in, First-out logic.
• Acts as a stack of papers on a desk.

• When possible, use the generic version of Stack<T>

Stack s = new Stack();
s.Push("Hello");
s.Push("World");
Console.WriteLine(s.Pop() + " " + s.Pop());
 
Stack<string> sg = new Stack<string>();
sg.Push("Hello");
sg.Push("World");
Console.WriteLine(sg.Pop() + " " + sg.Pop());