Knowing your audience is essential in communication because it helps you tailor your message to resonate with the intended recipients. Understanding your audience's characteristics, such as age, income, lifestyle, and values, will enable you to localize your content or target your communication to specific groups. By targeting your message to specific groups, you may create the sense that you are sensitive to diversity and an expert in your field. This will ensure that your message is well-received, and it will build trust between you and your audience.