Answer:
Marketing in general is the methodology by which a company is able to convince customers of purchasing their products and/or services, instead of those of another company. Because the purpose of marketing is basically to convince the public about a product, or service, and lead a customer to buy, they use marketing techiques to reach this goal.
However, there are two types of marketing: product marketing and services marketing.
Product marketing is a pretty concise marketing strategy basically because products are tangible, visible objects that a customer can easily relate to and compare. Therefore, promoting a product only requires using marketing strategies in which the customer is shown what the product is, looks like, and offers for the benefit, or pleasure, of the buyer.
But in service marketing, given that we do not have a tangible, visible object, or something that can be easily experienced through one of the physical senses, it requires the engagement of different factors so that buyers will give their trust to the company offering the service. Basically, in service marketing, a company will use strategies to convince the client to asign their trust to the service being offered over that of another potential provider and thus acquire the service.