The Complete Guide to Setting Up WordPress Multisite with Different Domains (2023)

Hey there! Are you looking to create a network of WordPress sites without the headache of managing multiple separate installations? Well, you‘re in the right place. WordPress multisite with different domains is a powerful solution that allows you to do just that.

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In this comprehensive guide, I‘ll walk you through the process of setting up a multisite network step-by-step. By the end, you‘ll have a fully functional network of sites, each with its own custom domain name, all managed from a single WordPress dashboard. Let‘s dive in!

What is WordPress Multisite?

First off, let‘s clarify what we‘re talking about. WordPress multisite is a core feature that allows you to create a network of sites all running on a single WordPress installation. That means you can manage multiple sites from one place, which is a huge time-saver.

Here are some key benefits of using WordPress multisite:

Simplified site management
Reduced maintenance and updates
Shared resources and content
Streamlined user management

In fact, did you know that over 100,000 sites are running on WordPress multisite? Some major brands using it include:

BBC America
The New York Times
Sony Music
Harvard University

While multisite is not the right choice for every situation, it‘s a great solution for many use cases, such as:

Businesses with multiple product sites
Educational institutions with department subsites
Media companies with topic-focused subsites
Web agencies managing client sites

Why Use Different Domains?

By default, sites in a multisite network use subdomains or subdirectories of the main domain. So you might have something like:

site1.mainsite.com
mainsite.com/site2

However, using different domains for each site has some significant advantages:

Branding – Each site can have its own unique domain name which is better for branding and SEO. For example, productA.com and productB.com instead of mainsite.com/productA.
Flexibility – Domain mapping gives you the flexibility to use any domain name you want for a site in the network, rather than being limited to the main site‘s domain.
Perception – Visitors perceive the sites as separate entities, rather than subsections of a larger site. This is especially useful for businesses or organizations with distinct properties.

In short, domain mapping makes a multisite network function more like a group of standalone sites from a visitor perspective, while still providing the benefits of centralized management on the back end.

Prerequisites

Before we get into the nitty gritty of setup, let‘s make sure you have everything you need. Here‘s what you‘ll want to have ready:

A WordPress hosting plan that supports multisite – You‘ll need a host that allows you to enable multisite. Most managed WordPress hosts support this out of the box, but check with your provider if you‘re unsure. I recommend SiteGround, WP Engine, or Flywheel.
A fresh WordPress installation – While you can convert an existing single site to multisite, it‘s much cleaner to start with a fresh install. Trust me, you‘ll save yourself some headaches.
Multiple domain names – You‘ll need a primary domain for your main site, as well as additional domains for the sites you want to create. Make sure you have access to the domain registrar or DNS settings for each domain.
An SSL certificate – SSL is required for domain mapping to work properly. Most hosts include free SSL these days, but double check with yours to be sure.

Got all that? Great, let‘s get started!

Step 1: Install WordPress and Enable Multisite

The first step is to install WordPress on your hosting account. If your host has "one-click install", go ahead and use that to create a fresh install. It should look something like this:

[Screenshot of WordPress install screen]

If your host doesn‘t have one-click install, you can download the latest version of WordPress from wordpress.org and upload it via FTP.

Once WordPress is installed, log in and navigate to Tools → Network Setup in the left sidebar. You should see a screen like this:

[Screenshot of network setup screen]

Select the "subdomains" option (this is preferable for most setups), choose a name for your network, and enter the admin email. Then click "Install".

WordPress will then give you some code snippets to add to your wp-config.php and .htaccess files:

[Screenshot of code snippets]

You can access these files via FTP or your host‘s file manager. Add the snippets exactly as shown, then save the files.

Once you‘ve done that, log back into WordPress. You should now see a "My Sites" menu in the admin bar which means multisite is now active.

Step 2: Add Sites to Your Network

Now that your network is enabled, you can start creating sites! From the "My Sites" menu, go to Network Admin → Sites → Add New.

[Screenshot of add new site screen]

Enter a name for your site, choose a subdomain or subdirectory path, and enter the admin email. Repeat this process for each site you want to create.

When you‘re done, you should see all your sites listed under "My Sites".

[Screenshot of all sites]

Step 3: Map Custom Domains

Here‘s where the magic happens. To map a custom domain to a site in your network:

Add the custom domain as a parked domain in your hosting account. The specifics of this will vary by host, but essentially you want to tell your host to listen for traffic to that domain. Here‘s an example of what it looks like in SiteGround:

[Screenshot of parked domain in SiteGround]

Install a domain mapping plugin on your network. I recommend WordPress MU Domain Mapping.
Go to Network Admin → Settings → Domain Mapping and configure the IP address and server hostname as instructed by the plugin.
For each site you want to map, go to My Sites → Network Admin → Sites, click edit on the site, and enter the custom domain in the "Site Address" field.

[Screenshot of site edit screen]

That‘s it! Your custom domains are now mapped to your sites.

Step 4: Configure Domain DNS Settings

The last step is telling your domains where to go. You‘ll need to edit the DNS settings for each mapped domain to point them to your WordPress hosting. There are two ways to do this:

Change the nameservers for the domain to your host‘s nameservers. This passes full control of the domain‘s DNS to your host. It‘s the simplest option, but gives you less flexibility.
Add A records for the domain pointing to your server‘s IP address. This allows you to manage DNS yourself and only delegate the specific records WordPress needs. It‘s a bit more complex but gives you more control.

Check with your domain registrar for instructions on editing nameservers or DNS records.

Once the DNS changes propagate, your custom domains should start loading the mapped WordPress sites like magic!

[Screenshot of custom domains loading]

Tips for Managing Your Multisite Network

Congrats, your multisite network with custom domains is now up and running! Here are a few tips to keep things running smoothly:

Keep everything updated, including WordPress core, plugins, and themes. A single vulnerability can impact your whole network.
Use a security plugin like Wordfence or Sucuri to protect against threats.
Implement a backup solution to safeguard your data. Plugins like UpdraftPlus work great.
Be selective about the plugins you activate network-wide. Too many plugins can slow things down.
Use a tool like iThemes Sync to manage updates and backups across your network from one place.

Multisite Compared to Other Options

Feature	Multisite	Standalone WP	Drupal	ManageWP
Single install	✓			✓
Shared users	✓		✓
Shared plugins/themes	✓		✓
Separate domains	✓	✓		✓
Unified updates/backups	✓			✓
Performance impact	Moderate	None	High	Low
Setup complexity	Moderate	Low	High	Low

As you can see, WordPress multisite provides a good balance for running multiple sites compared to other options. It‘s not the simplest setup, but it provides a ton of management benefits in the long run.

Wrapping Up

Whew, we covered a lot! Let‘s recap:

WordPress multisite allows you to run a network of sites on a single install
Using different domain names provides branding, flexibility and perception benefits
Setup involves enabling multisite, creating sites, mapping domains and updating DNS
Proper management is key to security, performance and efficiency

If you‘ve followed along, you should now have a fully functional WordPress multisite network set up with custom domain names. Pat yourself on the back, that‘s no small feat!

While multisite does come with some tradeoffs and isn‘t the right fit for every scenario, it‘s a powerful solution for streamlining management of multiple related sites.

I hope this guide has been helpful in getting you set up. Now go forth and create some awesome sites!