Negotiation is an interactive process between two or more negotiators or parties seeking to find common ground on issues of mutual interest, where the negotiators or parties seek to make a mutually acceptable agreement that will be honored by all.
In business negotiation, internal negotiations with colleagues are often as challenging as external buyer-seller negotiations. Negotiators usually seek an agreement on the exchange or sharing of products, services and to lesser extent ideas. While most large companies sign contracts to formalize negotiations, many negotiations are agreed without the use of written contracts.