Links and credits: https://www.interaction-design.org/literature/article/what-is-design-thinking-and-why-is-it-so-popular
Design thinking is is a non-linear, iterative process that teams use to understand users, challenge assumptions, redefine problems and innovative solutions to prototype and test. Involving five phases—Empathize, Define, Idea, Prototype and Test—it is most useful to tackle problems that are ill-defined or unknown.