The .com at the end of many web addresses (such as Lifewire.com) is called a top-level domain (TLD). The .com extension is the most common generic TLD. The .com TLD represents a commercial domain, which reflects the type of content being published. It differs from other TLDs that are intended for more specific content, such as .mil for U.S. military websites and .edu for educational websites.
.Com, .Co, .Org, .Co.uk, .Net? Check this before you choose a domain!
The use of a .com URL has no special meaning, except perception. A .com address is seen as a serious website because it is the most common TLD. However, it has no technical differences from .org, .biz, .info, .gov and other generic top-level domains.
Six top-level domains categorized the few hundred websites that existed at the start of the World Wide Web. Addresses ending in .com were intended for publishers who made a profit from their services. The six TLDs that existed then and are still in use today:
Today there are hundreds of top-level domains and millions of websites.
