The Importance of a roadmap

Can you elaborate on the importance of having a roadmap? 

A roadmap is similar to a strategic plan. It outlines your objectives and the presentation's intended results. It outlines the key measures or benchmarks required to achieve your presentation's objectives. It is also a superb instrument for communication. It aids in explaining the purpose of your presentation and the significance associated with it. Additionally, as I already indicated, it really aids in the presentation's flow because you don't want to lose your audience's interest. You need to maintain their interest and ensure that they recognise the significance of the information you are conveying.