Multisite is a WordPress feature which allows users to create a network of sites on a single WordPress installation. Available since WordPress version 3.0, Multisite is a continuation of WPMU or WordPress Multiuser project. WordPress MultiUser project was discontinued and its features were included into WordPress core.

WHY USE MULTISITE?

There are several reasons a site manager may want to use Multisite. Some of the benefits include:

• Since all sites within the Multisite network share the same WordPress core files, theme, and plugins, updating only has to happen once each time, rather than logging into several individual sites.
• Easy managing of subdomains of your root domain in one central dashboard
• Managing several sites which use the same theme and plugins becomes easier

WHY NOT USE MULTISITE?

There are also several reasons a site manager should choose to not use the Multisite configuration. Since managing a Multisite is by nature more complex, if you are unsure of whether you could or should use Multisite, usually it is best to avoid using Multisite until a clear need arises.

• If you manage multiple unrelated sites which do not use the same theme, plugins, or design scheme, Multisite may not be an ideal solution to manage all your sites.
• If you manage a single site
• If you are unsure of whether Multisite would be a good fit for your needs (when in doubt, stick with a single site)
• If each of your sites has a strong level of customization it is usually best to manage them separately
• If each of your sites use the same theme but with different custom functions added – since with Multisite each subsite shares the same themes and plugins, editing the theme would make changes for all sites using this theme.
• If you have not added the Multisite add-on to your Startup, Growth, or Scale plan.
• If you are on a Personal level plan, these plans do not support the use of Multisite

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