Iteration is a process of repeating a set of operations or steps to achieve a desired outcome. In various fields, such as software development and design, iteration allows for gradual improvements and refinements. By revisiting and modifying previous versions, individuals and teams can enhance their work based on feedback and testing. In mathematics, iteration often involves applying a function repeatedly to generate a sequence of values. Each result becomes the input for the next application of the function. This method is useful in solving equations and optimizing processes, as it helps to converge on a solution through successive approximations.