An introduction is usually the first section in a formal report. The introduction introduces the report to the reader.
The introduction explains what the report is about, why it was written, for whom it was written, and what it will cover. An introduction is usually no more than one or two pages (Figure 34).
Most introductions do the following:
Introduce the topic of the report.
Explain the purpose of the report.
Identify the target audience for the report.
Provide an overview of the content covered in the report.
Provide any history that may motivate readers to be interested.
Sections within the report may have their own introductions. A section introduction introduces a new topic, provides a content overview of the topic, and eases the transitions between sections.
(Courtesy of the U.S. Department of Labor)