there are 4 types:
Business Research
Procurement
Communication
Promotion
Procurement
Procurement is the process of finding, agreeing terms and acquiring goods, services or works from an external source, often via a tendering or competitive bidding process. The process is used to ensure the buyer receives goods, services or works at the best possible price, when aspects such as quality, quantity, time, and location are compared
Communication
Business communication is information sharing between people within and outside an organization that is performed for the commercial benefit of the organization. It can also be defined as relaying of information within a business by its people