KISS is an abbreviation for Keep it Simple Stupid. This is in fact a rule applied to many design industries including graphic design. The purpose of this design rule is to keep the design focused to achieve the goals rather than using it to create complexity that is ambiguous but pretty.
In terms of logo design when we talk about creating a simple logo design it does not mean that a simple logo design has to be an easy one. In fact keeping a design simple takes a lot more work and creativity than creating a complex one. The idea gets the most importance of all the elements in such a design practise.
The purpose of getting a business logo is usually to present a business or an organization in a positive light. A logo design tells the purpose of the business, what they are offering and why they are so good at it. A simple logo design focuses on highlighting these qualities and making the logo design more easy to understand.
