A marketing agency helps businesses enhance their brand and achieve their goals through a range of services. They develop comprehensive marketing strategies, create and refine brand identities, and execute digital marketing tactics like SEO, PPC, and social media management. Agencies also produce engaging content, conduct market research, manage public relations, and run advertising campaigns across various media. They design and optimize websites and analyze performance metrics to continuously improve marketing efforts. Overall, marketing agencies work to boost a company's market presence, attract customers, and drive growth.