What is the three additional PS?

The three additional Ps refer to People, Process, and Physical evidence, which complement the traditional marketing mix of Product, Price, Place, and Promotion. People emphasize the importance of the individuals involved in delivering a service, while Process focuses on the methods and procedures used to deliver that service. Physical evidence pertains to the tangible aspects that support the service experience, such as branding, packaging, and the environment in which the service is delivered. Together, these elements enhance the overall customer experience and service quality.