Testing new code, plugins, themes, or design ideas on a live WordPress site is generally something that busy site managers aim to avoid. Testing can disrupt customer service, cause unanticipated bugs, damage your aura of professionalism, and quite possibly wreak havoc on a site.
The solution is to create a staging area. It’s a digital safe space with an exact copy of a live site that nobody knows about - except you and your development team. In the staging area, you can test ideas before they go live without worrying about disruptions, bugs, or crashes. If your experiment goes wrong, simply create a new clone and start over.
Once you’re ready to go live with the new ideas, open the original site, and implement the changes.