If you use WebDriver API, then you don’t need the Selenium-Server.If you run your browser and tests on the same machine, and your tests only uses the WebDriver API, then you don’t need to run the Selenium-Server.WebDriver will run the browser directly.
Why Selenium-Server compared to Selenium-WebDriver?
- You are using Selenium-Grid to distribute your tests over multiple machines or virtual machines (VMs).
- You want to connect to a remote machine that has a particular browser version that is not on your current machine.
- You are not using the Java bindings (i.e. Python, C#, or Ruby) and would like to use HtmlUnit Driver.