Selenium is a popular open-source automation tool used to test web applications across browsers and platforms. It supports languages like Java, Python, and C#, making it versatile for automating web interactions. Selenium is widely applied in industries such as e-commerce, banking, IT services, and healthcare, where accurate and efficient web testing is essential. Career paths include Automation Test Engineer, QA Analyst, and Test Automation Specialist, offering strong growth as automation demand rises. Enhance your skills by enrolling in Selenium Training in Chennai at FITA Academy.