Example when a person goes to a dentist he use the services of the dentist and returns with a relief. In the process he does not get any physical commodity but still he has consumed a service. Core goods providers provide a significant service component as part of their businesses.
The American Marketing Association defines services marketing as an organisational function and a set of processes for identifying or creating, communicating, and delivering value to customers and for managing customer relationship in a way that benefit the organisation and stake-holders.