You can create one or many playground environments with a few clicks inside a Project. All playground environments come with WordPress pre-installed.
Another way to create a playground is by using a Snap. When you install a Snap, a new playground is created with WordPress plus the theme and plugins of your choice. This saves you time because you do not need to install and activate each plugin individually. The Snap does it for you!
Once your WordPress site is running the way you expect on your playground environment, you can publish your website to your production server.