Add-on domains refer to additional domain names hosted on a single hosting account. They allow users to manage multiple websites from a single hosting dashboard without the need for separate hosting plans.
Each add-on domain operates as an independent website with its own content and can have its unique email addresses and databases. They’re great for people looking to host multiple websites without the expense of maintaining separate hosting accounts for each one.
See also: Subdomain
Further reading: How to Choose a Domain Name
