Ever since WebdriverIO got launched, major companies adopted this tool for automation. It became popular very fast due to its powerful advantages. Since the launch, there have been lots of changes and improvements being made to the tool. In this article, we'll be discussing one of the improvements that have really helped us in writing automation scripts in async mode. WebdriverIO is asynchronous by nature. Earlier, WebdriverIO used to provide the ability to run commands in sync mode using node-fibers. However, due to some breaking changes in Chromium, WebdriverIO discontinued the support for sync mode. Please refer Sync vs. Async