An introduction is the beginning part of a piece of writing or a speech that sets the stage for what follows. It typically includes a hook to grab the audience's attention, some background information, and a clear statement of the main idea or purpose. This helps readers or listeners understand what to expect and why the topic is important. In academic writing, introductions often end with a thesis statement, which outlines the main argument or points that will be discussed. In casual settings, such as conversations or presentations, introductions may include personal anecdotes or questions to engage the audience and create a connection.