What is coding? A brief guide to the facet of computer programming Dave JohnsonJan 30, 2021, 06:17 IST Coding is the very backbone of the modern information age.alvarez/Getty Images Coding is a facet of computer programming, and programmers are often called coders. Coding is a process used to write instructions for what a computer, application, or software program does and how it does it. Programmers, or coders, write the computer programs that are the backbone of all modern tech. Coding is the very backbone of the modern information age we live in. A facet of and often shorthand for computer programming, coding gets its name from the fact that computer programs are sets of instructions referred to as computer code. These terms are all interchangeable, so programmers are often referred to as coders.