String formatting is a technique used in programming to create and manipulate text by inserting values into a string. This allows developers to construct dynamic messages or outputs by combining fixed text with variable data. For example, in languages like Python, you can use placeholders within a string, which are then replaced with actual values when the program runs. There are various methods for string formatting, including using the format() method, f-strings, or the older % operator. Each method has its own syntax and use cases, but they all serve the same purpose: to make it easier to create readable and maintainable code by managing how text is displayed.