A keyboard shortcut is a combination of keys that, when pressed together, perform a specific function or command in software applications. These shortcuts help users execute tasks more quickly than using a mouse or navigating through menus. Common examples include Ctrl + C for copying text and Ctrl + V for pasting it. Keyboard shortcuts are widely used in various operating systems, such as Windows and macOS, as well as in applications like Microsoft Word and Adobe Photoshop. Learning these shortcuts can enhance productivity and streamline workflows, making it easier to complete tasks efficiently.