A subdomain is a part of a domain in the domain naming system. It is prefixed to the domain and separated by a dot. Subdomains are used to guide users through the website or to offer specific functionality, such as a separate email server.
A subdomain is not registered but is set up by the server. Using a subdomain allows for a clearer structure and makes it easier to manage content organization.
A third-level domain is the segment of a website address that lies between the second-level and top-level domains. It is often also referred to as a "subdomain" because it relates to specific areas or pages within a larger website, such as "www.example.ch/blogging" for a single blog page on an example website. Using subdomains helps to organize a website.
Another way to create sections within a website's structure is through subdirectories. These are also called subfolders because they exist in folders under the root directory.
It is easy to visually distinguish subdirectories of subdomains because subdirectories are placed behind the root domain name.
Both subdomains and subdirectories are part of the main website, and both can be extended to multiple levels. However, it is more common to see nested subfolders than multiple levels of subdomains.
A subdomain can also be used to access a specific search engine or email address. These are also used as a marketing strategy by companies to support specific service offerings.
For subdomains, these can look like this:
For subfolders, these can look like this:
Technically, the "www" in URLs is also a subdomain, but it's not used in the same way as subdomains generally are. The "www" subdomain dates back to the time before the World Wide Web became popular, to indicate that a URL was a website address. Nowadays, it has become largely obsolete.
A subdomainSEO-Strategy is a clear way to define a content category or to assign departments their area on the primary website.
Several years ago, many companies used a website strategy based on subdomains for various reasons, including to increase their chances of being found in search engine results.
As mentioned earlier, a subdomain structure allows visitors to be redirected to specific areas of the website. This is perfectly fine and can function just like a subfolder. However, just as with a subdirectory method, you need to ensure that the various departments involved don't create duplicate content or topics.
Subdomains are great if your business has a large amount of information that would be difficult to maintain on a single website. This structure can also be useful if you run several large, recurring campaigns that require different landing pages, or if you're collaborating with another company and want to divide the branding across the project. Subdomains are useful when you need to separate information on your website for a specific business purpose.
One advantage of subdomains is that they are great for staging purposes. If all the URLs on your staging site are on a subdomain, it's easy to keep track of everything.
If you don't link your staging subdomain to your main domain, users probably won't be able to find it. You can also protect it with a password.
However, you must do that Crawling Block the staging site in the robots.txt file of the subdomain and use the noindex directive. Subdomains are also well-suited for managing websites with different purposes.
While your main website runs on WordPress, your knowledge center and shop can easily run on their own platforms if they are subdomains.
Finally, subdomains can help you maintain a simpler URL structure. For example, if your business targets an international audience and uses subdirectories to categorize content on your site, you might want to use subdomains for the international versions of your site.
The importance of subdomains increased when Google limited search results to two per host. This gave websites with multiple subdomains an advantage. It also became possible to rank multiple times in a search, leading to increased traffic, especially to the top ten results.
To this day, subdomains play an important role in ranking, even though individual subdomains are now grouped together by search engines.
How do subdomains affect SEO?
Their subdomains are treated as completely separate websites in Google's eyes, as Matt Cutts explains:
This means you can create a separate authority for each of the subdomains you use. Subdomains can actually be beneficial for your SEO efforts, as you will see below.
Sometimes it's simply not appropriate to include certain keywords in the main URL. But with subdomains, you still have a chance to integrate hard-to-rank keywords into your domain. Which can never hurt your rankings.
If you have a large and confusing website that is difficult to navigate, you are offering a poor user experience. A poor user experience means your users will spend less time on your site, which can lead to lower rankings.
Building significant authority can be very labor-intensive. However, evaluating niche markets can require far less time and energy. By evaluating and building authority in smaller markets, this authority will help strengthen the authority of the primary domain.
Google looks at robots.txt files on a per-hostname basis, which means it doesn't consider the instructions for your subdomain in the robots.txt file for your main domain. Each subdomain should have its own robots.txt file.
Linking your subdomains to your main domain makes it clear to Google that they are all part of the same website. It also makes it easier for search engines to crawl all the pages on your website and to navigate between them for PageRank purposes.
Finally, linking your subdomains and main domain is crucial for easy navigation for your website users.
Was your website set as a URL prefix property, like https://www.beispiel.ch/ or https://beispiel.ch/, added to Google Search Console (GSC), GSC https://blog.beispiel.ch/ Do not track by default.
You must either create a new URL prefix property for https://blog.beispiel.ch/ add or example.ch Add it as a domain to include everything.
Developers prefer to use a subdomain for setting up a staging version of the website, as this allows for a separate database and thus shields the main website from experiments, which are always carried out on the subdomain.
Using a subdirectory for staging development makes the main website vulnerable. Developers sometimes choose to run the mobile version of the website from subdomains.
Multiple business units – A corporate conglomerate with multiple business units can represent each of its units via subdomains. Separate subdomains give each company the flexibility to manage its online business according to its priorities and brand preferences.
E-commerce companies can also set up an online shop on a subdomain, which is easily accessible to users through a suitable search query.
Business functions – Customer support can have a separate subdomain such as support.website.ch and the customers can customer.website.ch use. This ensures that users can easily access the relevant services by using appropriate domains, depending on their function.
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