As a UX designer, you should consider the Why, What and How of product use. The Why involves the users’ motivations for adopting a product, whether they relate to a task they wish to perform with it or to values and views which users associate with the ownership and use of the product. The What addresses the things people can do with a product—its functionality. Finally, the How relates to the design of functionality in an accessible and aesthetically pleasant way. UX designers start with the Why before determining the What and then, finally, the How in order to create products that users can form meaningful experiences with. In software designs, you will need to ensure the product’s “substance” comes through an existing device and offers a seamless, fluid experience.