A. Before the company was small so they communicate easily by face to face communication because it helps them to express their thoughts in a good way and directly. After that the company developed and became large and they can provide communication tools such as memos, websites, face to face and emails in which these allows to sending and replaying to messages to each other.
B. Face to face communication is the best way. Using many channels as possible but use them strategically understand when and how to use them to get the greatest impact.