Iteration is a process of repeating a set of actions or steps to achieve a desired outcome. In various fields, such as software development and design, iteration allows for gradual improvements by refining ideas or products through multiple cycles. Each cycle incorporates feedback and lessons learned from previous attempts, leading to better results over time. In mathematics, iteration often refers to applying a function repeatedly to its own output. For example, in numerical methods, iterative techniques help find solutions to equations by approximating values through successive calculations. This method is essential for solving complex problems where direct solutions may be difficult to obtain.