A hypercube is a geometric shape that extends the concept of a cube into higher dimensions. While a standard cube exists in three-dimensional space, a hypercube can exist in four or more dimensions. The simplest hypercube is a tesseract, which is a four-dimensional cube. Each additional dimension adds complexity, making hypercubes difficult to visualize. Hypercubes can be represented mathematically and are often used in various fields, including computer science and mathematics. They help in understanding complex data structures and multidimensional spaces. The study of hypercubes also has applications in network design and optimization problems.