What is selenium Grid and selenium WebDriver?
Selenium Grid is a tool that helps the tester to perform automated testing on multiple operating systems and browsers without the need for physical access. The Selenium Grid server facilitates communication between different instances of the web browser, using the Remote WebDriver protocol.
The grid enables parallel execution of tests across multiple platforms and browsers, allowing great scalability and test coverage. Selenium grid supports both desktop and mobile environments.
Selenium WebDriver is a tool for writing automated tests with ease. It provides support for all major browsers including Firefox, Internet Explorer, Chrome and Safari.