Communication is defined as the exchange of information between at least two people. There are several forms of communications, ie. communication can be classified into said and written word, verbal and non-verbal, formal and informal, and external and internal communication. It does not matter of which classification of communication is said, communication pervades all aspects of human life, from private to business. Focus of this paper is on business communication, ie. communication which takes place at corporation or organization level. All aspects of communication are included in such process, but the emphasis is on formal and informal, and further on external and internal communication of corporation, since, for example, an individual in private life does not use formal communication as such. This paper gives an example of external and internal communication; corporation used as an example is Philip Morris International. This research has shown that Philip Morris as a corporation engaged in distribution of tobacco products and has limited communication channels with its consumers, has well developed business communication, both inside and outside of corporation, and is very well placed on the market and distributes its products.