What happens when you have a “staging site” at any hosting service and then launch? Well, sometimes things go smoothly and then–often–all links don’t update so you end up with “missing image” errors. Bummer. But, like so many things in WordPress, “there’s a plugin for that!”
As their developers says: “One common problem with moving WordPress to a new domain or directory is that updating the settings does not update the permalinks or urls embedded in the content. This means that images and other uploaded content will not show up!”
This plugin fixes that problem. It updates all urls and content links in your website to reflect the move to the new domain or directory.
Go to that plugin’s website to learn more.