WordPress Multisite is a way to run multiple websites from the same WordPress install.
How to install WP Multisite
Installing WordPress as Multisite is super easy.
First thing you need to do is to install WordPress. After that connect to your website using an FTP client like FileZilla. Edit the file
wp-config.php, and add the following line just before That’s all, stop editing! Happy blogging.
wp-config.php file and log in to your WordPress website. Go to Tools » Network Setup. This is the place where you will configure and set up your WordPress Multisite Network:
It’s as simple as that.