The term expository essay or writing refers to an informative, explanatory and definitive piece of writing reflecting the essayist’s ideas about any thing in particular. Expository essays normally describe an event, a technique or any thing in a sequential order i.e. step by step. Most of the academic essays that are written under any topic are expository essays to some extent. College and university students are being trained in expository writing because it has its application in industry, media and other fields. Students can also consult professional writing services in this regard. In this article, you will be given an introduction about techniques of writing such essays.