What is Multisite?
Multisite is a WordPress feature which allows users to create a network more than a one sites on a single WordPress installation. Available since WordPress 3.0, Multisite is a next Version of WPMU or WordPress Multiuser project. WordPress Multisite project was dropped and its features were included in WordPress core.
A multisite network can be very similar to your personal blog like xceltec.com. End users of your network can create their own sub sites on demand, just like xceltec.com can create blogs or multistore on demand. If you do not have any need to allow end users to create their own sites on demand, you can create a multisite network in which only you, the one administrator, can add manage all the site from one dashboard.
Advantages Of Multisite
Disadvantage of Multisite
The biggest issue is that it uses ONE database to manage ALL sites. It is more complexity to the Admin Dashboard, and to the use of various plugins. It also makes migration, later separation, and backups a bit more of a complex issue (well…. significantly more complex!)
So, assess your needs, and if required, do not hesitate to install a multisite. While installing multisite is very easy, But there are complexities involved in management. Also migrating a multisite or separating a single website from a multisite can be a bit difficult. To use Multisite main rule here is Proceed With Caution!.