What is the full form of .COM

.COM - Commercial

When you see a site with a .com extension, it means operations of that site are entirely or primarily internet-based. This is what we call a "Generic top level domain" address.

Some other categories of "top level domains" are :-

• Generic Top-Level Domains (gTLD) like .COM, .ORG, .NET
• Country Code Top-Level Domains (ccTLD) like .AU (for Australia), .IN (for India), .US (for the United States)
• Sponsored Top-Level Domains (sTLD) like .EDU, .GOV, .MOBI
• Generic-Restricted Top-Level Domains like .BIZ, .NAME

Internet Corporation for Assigned Names and Numbers (ICANN) is the international organization for the assignment of domain names and IP addresses.

Historically, .com web site addresses were for those publishers out to make some kind of profit through their Internet services. Actually .com has no technical difference from a .info or a .biz top level domain name.