A wireframe is a blueprint that is useful for helping you, your team and stakeholders think and communicate about the structure of the software, website, product you’re building. Starting your projects with wireframes, before any code is written, and any visual design is done, will save you a lot of time, and will help you and your team in testing more ideas before locking on a single one.
Wireframes promote exploring ideas
The low-fidelity make it clear that the design is not final, forcing the people involved to focus on the structure and development, rather than simple details or visual designs. Wireframes also promote fast and productive feedback sessions, since everything is so easy to make and to change.