What are the differences between a first-level domain and a second-level domain?

Most people who have purchased domain names know that there's a significant difference between top-level domains (TLDs) and subdomains. A TLD is typically called a top-level domain (TLD), while a subdomain is a domain located below the TLD.

Differences between TLDs:

The biggest difference is that TLDs are mostly used for main websites, while subdomains are mostly used for sub-websites.

In a sense, a subdomain depends on its TLD. If the TLD disappears, the subdomain will also cease to exist.

Conversely, if a subdomain encounters problems, the TLD website will not be affected.

Search engines often treat subdomains as independent websites and may transfer some of the TLD's ranking or authority to them. Therefore, for users, a subdomain is essentially a complete domain.

From a value perspective, a domain name is much more than just a simple URL. A far-sighted company will carefully consider its domain name before launching a website. A good domain name plays a crucial role in various aspects of a company's future website marketing, product promotion, and brand building.