The subdomain is separate from the main site, so you can install specific types of content that are different from your root domain. On the other hand, the subdomain is kind of inside your site. Subfolders are the level of the same hierarchy as the main domain and are branches from the domain to which they belong.
Subdomains appear before the domain name in a URL such as blog.hubspot.com rather than in a subfolder that looks like this: hubspot.com/blog.
A subdomain can be used if parts of your site are large enough and need a separate hierarchy. However, when it comes to the subfolder, all parts of your site depart from the main domain.
So how can the company use the subdomain? Below are the most common ways:
1. Support: Sometimes it makes no sense to have customer support on the main site. For example, Google uses support.google.com instead of google.com/support. The main reason probably has to do with the structure of the site. Google.com is a search engine, and the Google support line does not belong to its Search business line. Therefore, it needs its own subdomain to properly connect to and serve its users.
2. Different regions: If you serve multiple regions, whether national or international, using a subdomain is the right idea. If you have a site in German and English, it makes no sense to list them as subfolders. For example, Craigslist uses subdomains for the different regions it serves. Here are two of its subdomains: eitherangecounty.craigslist.org/ or stgeorge.craigslist.org/.
3. Blog: Many companies choose their blog as a subdomain. Sites may choose their blog as a subdomain if they have a content campaign that is large enough to earn their own hierarchy. In addition, the subdomain is useful for a blog if you want to do niche PR.
4 E-Store: For companies that sell goods in addition to their usual goods or services, it is wise to place your e-commerce store on the subdomain.
5. Events: If your company holds events, you can try to highlight this section of your site on the subdomain. Again, this is useful when you want to separate the section of your site from your usual goods or services. Microsoft does this through its website events.microsoft.com.
Eventually, subdomains are still part of the site, but when the search engine indexes them, they are considered a separate entity. Below let’s analyze how they affect SEO.
How do subdomains and subfolders affect SEO?
Some SEO experts believe that Google’s spiders may confuse a subdomain and consider it to be a completely different site than the primary domain. However, Google says its algorithm recognizes subdomains as extensions to parent domains.
According to Google, the search engine browses, indexes and ranks subdomains and subfolders equally.
In the video below, Google’s Webmaster Trend Analyst John Mueller says subdomains generally won’t hurt a site’s ranking. In fact, Google is smart enough to see that your primary domain and subdomain are tied to the same website, he says.
Some SEO professionals claim that subdomains do not share the authority it receives from incoming links (or backlinks) with the root domain. The reverse may also be true; since subdomains are considered separate entities in your root domain, it may not inherit the weight of the links you have collected for the main site.
In addition, if you optimize pages for the same keywords on your main site and subdomain, you will compete with yourself.
On the other hand, other SEO experts say that subdomains make it easier to navigate your site. Ultimately, this leads to a better user interface, which may lead to better engagement, and thus to better SEO.
In addition, subdomains can be beneficial if you have a large corporation, and subdomains serve a different purpose and essentially function as a separate business.
For example, Disney has subdomains such as cars.disney.com, shop.disney.com, and movies.disney.com.
Because these subdomains serve very different purposes, it doesn’t matter if the sites have the same backlink permissions, as they most likely don’t target the same keywords.
According to some SEO xidmeti experts, another advantage is that subdomains can help build niche authorizations. For example, you may want your blog to be considered a separate entity from your product or service.
Conversely, if your site does not have deep hierarchical verticals in navigation, you may not want to use a subdomain. After all, you want as many links as possible to work on your main site.