Content Marketing is a long-term strategic marketing approach centered on creating and distributing valuable, relevant, and consistent content. This content aims to attract and retain a clearly defined audience, ultimately driving profitable customer action. Unlike traditional advertising, content marketing focuses on providing information, entertainment, or solutions to audience problems, thereby building trust, authority, and brand loyalty over time. In the AI era, its definition expands to explicitly include optimizing for AI-driven understanding of meaning, context, and user intent, moving beyond simple keyword matching.