Software Development

KISS

Definition

The KISS principle ("Keep It Simple, Stupid") states that most systems work best if they are kept simple rather than made complicated; therefore, simplicity should be a key goal in design, and unnecessary complexity should be avoided.

Why It Matters

Simple code is easier to read, understand, debug, and maintain. Developers often have a tendency to over-engineer solutions, and the KISS principle serves as a reminder to favor the simplest approach that gets the job done.

Contextual Example

A developer needs to solve a problem. They could use a complex design pattern they just read about, or they could use a simple `if` statement. The KISS principle would encourage them to use the `if` statement if it solves the problem effectively.

Common Misunderstandings

  • "Simple" does not mean "easy" or "crude." Achieving simplicity can be very difficult.
  • KISS is often cited alongside other principles like DRY and YAGNI.

Related Terms

Last Updated: December 17, 2025