A trademark is a name and/or logo affixed to a product or associated with a service.
Whether you act in B2B or B2C, you must think about one (or more) brand(s) to communicate on your business, in order to attract investors, customers, members.
It must be a distinctive and non-descriptive sign, and of course an available sign.
This sounds like boring legal language, but from a marketing point of view, these conditions make sense to differentiate you from your competitors. The goal is to ensure that interested people can find you easily, and don’t knock on another company’s door, thinking it’s you hey will find.
If the conditions are met, trademark registration grants you a right to a monopoly on the protected sign. Conversely, such protection also allows you to avoid finding yourself in a situation of counterfeiter.