2. Service: usually invisible, it is the result of the contact between the supplier (organizations and individuals providing products) and the customer (organizations and individuals receiving products), the result of the internal activities of the supplier, and the result of at least one activity that needs to be completed in the contact between the supplier and the customer. Such as medical care, transportation, consulting, finance and trade, tourism, education and so on. The provision of services can include: activities completed on tangible products provided to customers (such as cars under maintenance); Activities completed on intangible products provided to customers (such as income statement required for preparing tax returns); Deliver intangible products (such as providing knowledge transfer information); Create an atmosphere for customers, eg in hotels and restaurants. Service features include: safety, confidentiality, comfortable environment, credit, courtesy and waiting time.
Therefore, the purchased courses belong to services.