all you need to know about:
Website Wireframing Methodology
Website wireframes are grayscale line drawings used as blueprints during the development cycle. They help developers, designers & key project stakeholders build a shared understanding of site functionality before spending time and resources on design and development. In other words, wireframes define what the product will do when complete.
Wireframes are great if you are not sure how to best communicate requirements and specifications in a way that is easy to understand for all project stakeholders.