KISS is the abbreviation for "keep it simple and stupid". Freely translated: Make it as simple as possible.
The KISS formula was originally a rule for the recipient-friendly design of advertising letters. A simply designed sales letter can be read very quickly. The reader can therefore recognize the advantage or benefit of the offer within a few seconds and is thereby prompted to read further and to react to the advertising message.
Today the KISS formula is the basic rule for successful marketing. A high level of marketing complexity overloads the managers and employees of a company and, above all, its customers.
Examples: Complicated products, operating instructions, price, discount and bonus systems. Simplification means concentrating on the essentials for the customer.