Why do some website domain names not start with www?

When we surf the Internet, many of the URLs we have seen have "www", such as "www.taobao.com". But there are also many websites whose domain names do not have "www". Why is this?

Let's first understand what a domain name is. A domain name is like a house number on the Internet, which can help us find the corresponding website server. "www" is the abbreviation of "World Wide Web". In the early Internet era, there were many kinds of network services, in addition to web browsing, there was also file transfer. The domain name starting with "www" is specifically used to identify the server that provides web browsing services.

With the advancement of technology, more and more domain names do not start with "www". From a technical point of view, the current domain name system is more powerful. For example, it is like having an intelligent navigation that can accurately send domain names to different servers. For example, Douyin's official website "douyin.com" does not have "www", but we can access it normally when we enter this URL, because the domain name system behind it can accurately deliver our access requests.

From the perspective of operation and user experience, many companies want to make their brands easier to remember. Short domain names are very advantageous, such as JD.com's "jd.com", which is simple and easy to remember, and conforms to the current fast-paced information dissemination method. Moreover, short domain names are more convenient to enter on mobile phones. In addition, enterprises can maintain the unity of brand identity by using the same main domain name in different network services. For example, Tencent's main domain name "qq.com" can be used to access QQ's official website and Tencent's email service "mail.qq.com".

Some websites use subdomains to distinguish different functions in order to meet special business needs. In addition to "www", "mail" is also commonly used for email services and "ftp" for file transfer. For example, some official websites of schools directly use "xxx.edu.cn" as the main domain name. You don't need to enter "www" to visit the school's official website, and "mail.xxx.edu.cn" is the school's email login address.

In general, not using domain names starting with "www" is the result of changes in Internet technology development and website operation strategies. It not only makes it more convenient for us to surf the Internet, but also meets the various needs of enterprises, and is a reflection of the continuous progress of the Internet.