This is generally one paragraph. The easiest way to explain this section is to think of it like an abstract or introduction. This section, if written properly, can actually act as the abstract for this paper. It will, in a sense, set up the rest of the paper, which is the review of the case, analysis, recommendations, and the summary and conclusions sections. Remember that if you got this information from the textbook you should cite Hawkins, Mothersbaugh, and Best (2015). You should NOT write “According to the textbook,” as your reader has NO IDEA who or what is that.