Quick answer
If you run a WordPress Multisite network — say, one site per event, region, or brand — you must choose subdomains or subdirectories before you start, because switching later is painful. Subdirectories (site.com/event) are simplest and good for closely related sites; subdomains (event.site.com) suit more independent or separately branded sites. Decide based on how separate the sites really are.
- Decide before you build — switching later is hard.
- Subdirectories: simplest, best for closely related sites.
- Subdomains: better for independent or separately branded sites.
WordPress Multisite is powerful, and one of its most important early decisions is the URL structure: subdomains or subdirectories. You can technically switch later, but it is not straightforward and tends to cause problems, so it is worth getting right from the start. If you run a network of event sites, here is how to choose.
What Subdirectories Are
Subdirectories put each network site in a path of your main domain — for example yoursite.com/summerfest and yoursite.com/winterfest. They are the simplest option, usually need no extra DNS or hosting configuration, and let all sites benefit from the main domain’s authority. They work best when your network sites are closely related parts of one overall brand.
What Subdomains Are
Subdomains give each site its own prefix — for example summerfest.yoursite.com and winterfest.yoursite.com. They feel more like independent sites, which suits separately branded events or regions, and they require a wildcard DNS record and matching hosting setup. Search engines tend to treat subdomains as somewhat more separate from the main domain than subdirectories.
How to Choose
| Choose subdirectories when | Choose subdomains when |
| Sites are closely related under one brand | Sites are independent or separately branded |
| You want the simplest setup | You are comfortable with DNS/hosting config |
| You want shared domain authority | You want each site to feel distinct |
There is no universally correct choice — it depends on how separate your sites really are. The key is to decide deliberately up front, since changing structure later is disruptive.
Pick subdomains or subdirectories on day one. It is a cheap decision now and an expensive one to reverse later.
For Networks of Event Sites
If you manage several events under one umbrella brand — recurring annual editions, or sub-events of a festival — subdirectories usually make sense and keep everything under your main domain’s authority. If you run distinct, separately branded events or regional sites that should feel independent, subdomains fit better. Either way, this is a Multisite decision, so first confirm Multisite is right for you at all — see our complete guide to WordPress Multisite, and make sure your hosting supports your chosen structure.
Final Thoughts
Subdomains or subdirectories is a small-sounding choice with long-term consequences for a Multisite network. Subdirectories are simplest and best for closely related event sites; subdomains suit independent or separately branded ones. Decide based on how separate your sites truly are, lock it in before you build, and confirm your hosting supports it.
Recommended next read
Not sure Multisite is right for you? Start here.
FAQ
Should I use subdomains or subdirectories for Multisite?
Use subdirectories for closely related sites under one brand and the simplest setup, and subdomains for independent or separately branded sites where each should feel distinct. Decide based on how separate your sites really are, and choose before you build because switching later is disruptive.
Can I switch between subdomains and subdirectories later?
Technically yes, but it is not straightforward and can cause URL, SEO, and configuration problems. Because of that, the structure should be chosen deliberately at the start of your Multisite setup rather than changed after your sites are live.
Which is better for SEO?
Subdirectories share the main domain’s authority, which can help closely related sites, while subdomains are treated as somewhat more separate. Neither is universally better; the right choice depends on whether you want your network sites to share authority or stand alone.
