A buyer persona is a semi-fictional representation of an ideal customer based on market research and real data about existing customers. Personas include demographic details, behavior patterns, motivations, goals, and challenges. Creating detailed buyer personas helps businesses understand their target audience better and tailor their marketing strategies, product development, and communication efforts accordingly. By focusing on the specific needs and preferences of each persona, companies can create more personalized and effective marketing campaigns that resonate with their intended audience, ultimately driving higher engagement and conversion rates.