The document discusses different levels of service products that provide benefits to customers. It begins by defining a service as a mix of tangible and intangible elements that aims to satisfy consumers. There are four levels:
1) Core level: The basic benefits that satisfy basic customer needs.
2) Actual level: The tangible aspects like brand name, design and quality that accompany the core service.
3) Augmented level: Intangible aspects like after-sales service and delivery that support the actual product.
4) Potential level: Additional benefits or features that can be added to attract new customers. Each level provides increased value to customers. The document uses examples like tax consultants and catering services to illustrate the different