stdout, short for "standard output," is a stream in computer programming used to display output from a program. It is typically used to show results, messages, or data to the user. When a program runs, it sends its output to stdout, which is usually connected to the terminal or console where the user can see it. In many programming languages, such as Python and C, functions like `print()` or `printf()` are used to send data to stdout. This allows developers to easily communicate information and debug their programs by viewing the output directly in the command line or terminal window.