A company's ownership of sufficient shares in another organization to exercise voting control is known as a "controlling interest." This ensures that the controlling company has a significant say in the decision-making processes of the other company. In finance, this term is often used in the context of mergers and acquisitions, where a company acquires a controlling interest in another company to gain strategic advantages. Essentially, a controlling interest allows a company to have a considerable influence over the operations and direction of another company.