What approaches exist for choosing the form of address in business correspondence or oral communication?

The choice of form of address in business correspondence or oral communication depends on several factors:

• The level of formality of the situation: official letters require a more formal address ("Dear Ivan Ivanovich"), while in informal settings, a name can be used.
• The status and role of the interlocutor: more polite and formal address is used for managers or clients.
• Cultural and corporate traditions.

For example, in a letter to a stranger, it is better to use "Hello, Ivan Ivanovich," while in a conversation with a colleague, simply "Ivan".