A marketing agency is a company that provides various solutions and knowledge in the field of marketing. They aid companies to reach out to their audience and promote products. Marketing agencies can offer various services, including market research marketing, advertising, branding managing social media, content creation, public relations, and marketing via digital channels.A marketing agency is a company that provides various solutions and knowledge in the field of marketing. The agencies assist businesses in promoting their offerings or services in order to reach their public, and reach their marketing goals. The agencies provide many different services including advertising, brand management, social media, the creation of content, and public relations.