Service marketing education flows 3 ways, also known as the service marketing triangle: Internal marketing – marketing from the company to the employees. Getting employees on board and behind what your service offers. This is done through training, building trust, and empowering employees to become ambassadors of your service. External marketing – the more obvious marketing flow from company-to-customers. This is achieved through advertising, sales promotions, public relations, direct marketing, and online marketing. Interactive marketing – marketing between the customers and the employees at their various touchpoints in the marketing funnel. This includes personal selling, online customer support and interacting with customers on social media.