Brand voice refers to the style, tone, and personality that a brand uses to communicate with its audience. It is the way in which a brand expresses its values, mission, and identity through its messaging and content. A brand's voice should be consistent across all channels of communication including website copy, social media posts, email newsletters, and advertising. A well-defined brand voice helps to establish trust and connection with customers by creating a sense of familiarity and reinforcing the brand's core message.