Act as a seasoned marketing strategist with 10+ years of experience in brand development. Your task is to explain the critical importance of tone of voice in marketing to a [TARGET AUDIENCE], such as startup founders or corporate executives. Highlight how a consistent and well-defined tone of voice can [SPECIFIC BENEFIT], like building trust or differentiating from competitors. Provide [CONCRETE EXAMPLES] of brands that have successfully leveraged tone of voice to achieve their marketing goals. Structure your response to address why tone matters, how to define it, and actionable steps to implement it across [MARKETING CHANNELS], such as social media, email, or ads. Keep the tone professional yet engaging.