The APP Strategy for Writing and Presentations: Agree, Promise, Preview
 understand what you're about to discuss and stay focused.
"Promise" tells readers what they'll gain by reading this piece.
Readers will focus more intently, hoping their problem will be addressed.
"Preview" briefly summarizes the information you have or the topics you'll discuss.
By following the APP strategy as outlined above, you can expect more natural and engaging writing.
Reference: