A marketing agency is a service provider for measures concerning the marketing mix: communication, price, product, and sales. They assist companies with the planning, design, and execution phases of their marketing activities. Full service agencies take on all three of these phases. A marketing agency has the latest and greatest marketing tools that benefit your organization. As subject matter experts and dedicated professionals, agency team members are on top of the latest trends, techniques, and tools. So when you use their services, you also get access to new technology and strategies.