A business interpreter will help to ensure that international business communication is effective. This could be in trade events, global meetings, negotiations and others.
A business may call on business interpreters to help build relationships with foreign partners, which can be tricky to do if you are not able to speak the same language. This is particularly effective when they can help to bridge both language and cultural gaps.
A business interpreter is useful if you are running a business and want to expand and grow into a more global market, however, many businesses employ individuals for certain roles (e.g. sales) who already have the required language abilities as opposed to employing individuals in an interpreting role.