A service is any intangible activity, process, or benefit that fulfills a need without requiring the ownership of a physical item. It is typically produced and consumed simultaneously and often requires direct interaction between the provider and the customer.
Consider services as an experience instead of buying that product - for example, you don't own an online course, a hotel, a... https://www.novelvista.com/blogs/it-service-management/what-is-definition-of-service