Visual regression testing is a software quality assurance technique used to inspect websites and apps for user interface bugs. It ensures that any updates to the system, software, or code do not impact the product's user interface or usability by taking snapshots of the user interface and comparing them from one commit instance to another. This technique focuses on validating visual elements like buttons, menus, colors, brightness, positioning, font, color contrast, and other HTML DOM components. Visual regression testing is beneficial as it improves the development and testing process, increases confidence in software products, and ensures continuous business operations. It can be carried out manually or automatically using a testing tool and script, and various tools are available to support this technique, including Sauce Labs Visual Testing, PhantomCSS, Rainforest QA, Applitools, Kobiton, Percy, and FBSnapshotTestCase. By adopting visual regression testing, organizations can consistently offer excellent user experiences and maintain quality and speed in their software products.