Visual Artificial Intelligence (AI) in software testing is a discipline that applies AI technologies to visual elements for better decision-making. It automates full-screen validation, reduces manual effort, and adapts to UI changes. Key areas where visual AI can help in software testing include visual regression testing, cross-browser testing, test coverage using DOM analysis, accessibility, and debugging. Visual AI tools like LambdaTest offer SmartUI platforms with AI-augmented capabilities for smart visual UI testing across different browsers, devices, and operating systems.