I had been using a different Backup plugin and it works fine, but only backs up the WP db. For moving a site - or to restore from disaster - you need much more that the db to get it back up and running the way it was. This is the easiest to use way to have a complete backup of your WP site's essentials: your theme, its settings and plugins all nicely wrapped up in convenient zip format to keep a copy on your computer or a backup drive or anywhere. Install, click to start the backup, wait while it does the job and download your zip. It is not done in 5 seconds, it takes a little time to do the work, but it is done in a very reasonable time and far less time than doing it via ftp or other methods.
Just what I needed! Great work, thank you jcpeden!