This is a business messenger for sending and receiving real-time conversations and files. It is linked to the organizational chart of the collaboration tool used by the company. KakaoTalk can easily leak confidential company information through conversations with unauthorized users within the company. However, this messenger can only communicate with users within the organization chart within the company. You can receive various notification texts from collaboration services through Messenger, and you can easily move to the corresponding service. You may only receive these notifications during certain working hours. Based on the workspace, you can create a new workspace with other members of the organization and collaborate with business partners as if you were having an in-house conversation.