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A domain suffix is the last part of a domain name (like .com or .org) that helps categorize a website by its purpose or geographic location. In a broader computer context, a suffix can also refer to file extensions (like .txt or .jpg), which indicate the file type and the software needed to open it.

Domain name suffix

Description: Also known as a Top-Level Domain (TLD), it is the part of a website address that comes after the final dot.

Function: It helps to identify the type of organization or geographic region the website represents.

File extension suffix

Description: The letters at the end of a file name, following the last dot.

Function: It identifies the type of data in the file and the program that can open it.