This document discusses creative strategy in advertising. It covers inputs to the creative process like research, qualitative studies, and testing. Common models of the creative process are described, including preparation, incubation, illumination, and verification stages. Developing a major selling idea and creative brief are important parts of creative strategy development. Approaches to finding the big idea that can be a basis for an advertising campaign include unique selling propositions, branding, inherent drama, and positioning. Contemporary strategies aim to engage consumers through attention-grabbing and adaptable big ideas.