Selenium testing plays a vital role in improving software quality by enabling efficient, automated testing of web applications across multiple browsers and platforms. It helps identify bugs, performance issues, and inconsistencies early in the development cycle, reducing the risk of defects in production. With features like regression testing, parallel execution, and integration with CI/CD pipelines, Selenium ensures faster, more reliable releases. Professionals can enhance their skills through Selenium online training, which covers real-time project handling, framework design, and best practices. This hands-on experience ensures testers can deliver high-quality, stable applications while meeting tight release deadlines and user expectations.