By Zieliński Jerzy

Subdomain – what is it?

Good website structure and organization is key to ensuring that users can easily navigate and access the information they are looking for. One tool that can make it easier to organize your site is the subdomain. In this article, I explain what a subdomain is, how it works in the context of a domain, and when it’s worth using it and when it’s not. Keep reading to learn more about this important element of website structure.

What is a subdomain?

A subdomain is the part of a web address that comes before the main domain, separated by a dot. This is a type of sub-site that operates independently of the parent domain. With subdomains, different parts of a website can be separated, making it easier to organize and manage content.

For example, if the parent domain is “”, the subdomain could look like this, for example: “”. In this case, the subdomain “store” means a separate section of the website, which can have its own menu, product category, and unique URLs for individual products.

A subdomain can also be used to create a separate website that is linked to the main domain, but has separate URLs and content. For example, you can create a subdomain “” to host a blog thematically related to the “” site, but they will be separate sites with unique URLs and content.

example of domain and subdomain –

Domain vs. subdomain

A domain is the main web address that identifies a site on the web. A subdomain, on the other hand, is the part of a web address that singles out a particular section or site on the home page. Each subdomain operates independently of the parent domain and can have its own unique content and URLs.

Domain and subdomain can affect a site’s positioning in search results. Therefore, it is important to select them properly and use them thoughtfully. Subdomains can be used to organize a website and make it easier for users to navigate, but they can also be used for marketing purposes or to run separate websites linked to the main domain.

Why use subdomains?

First of all, it allows easier management of a website, especially for large sites. This also makes navigation easier for users and makes it easier for them to find the content they need. Additionally, it can help your site’s search engine positioning, as search engines treat subdomains as separate entities, which can benefit your site in terms of

When to use a subdomain and when not to?

It depends on individual needs and goals. For small websites with a single section, a subdomain may be unnecessary and only introduce unnecessary complexity. On the other hand, for large sites where there are different sections or sub-sites, a subdomain can be an advantageous solution.


A subdomain is an important part of a website’s structure. It makes the site easier to manage and easier for users to navigate. When to use a subdomain and when not to, it depends on individual needs and goals. One thing is certain – a subdomain is a solution that can benefit the site in terms of management and search engine positioning.

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