This chapter covers the Selenium Grid Architecture and how users would build a remote Selenium Grid using the standalone servers and drivers to create the hub, browser nodes, and mobile simulator/emulator nodes. The following topics are covered:

• Introduction
• Virtual grids
• Selenium driver class – WebDriver versus RemoteWebDriver
• Switching from local to remote driver
• Selenium standalone server and client drivers
• Selenium standalone server and browser driver command-line options
• Appium server and mobile simulator/emulator command-line options
• Selenium Grid console
• Directing traffic to Selenium nodes