A business that runs entirely on word of mouth is already doing well in one important area, which is trust. People are recommending it to others, and that is powerful. Digital marketing can take that same trust and spread it further. Things like asking happy customers to leave reviews online, sharing testimonials on social media, or creating content that explains what the business does can attract new people who have not heard of it through personal connections yet. Word of mouth does not scale easily on its own, but digital marketing can help it reach more people faster.