What do you understand by the notion of 'no consideration no contract'?

“No consideration, no contract”

Consideration is the essential bargain‑price element that each party must give or promise in a contract. It can be a right, benefit, forbearance, or a detriment incurred by the promisee. The doctrine of no consideration, no contract holds that a promise unsupported by consideration is not enforceable as a contract; it remains a mere gratuitous pledge. Hence, for a legally binding agreement, both parties must exchange something of value, otherwise the agreement lacks the requisite consideration and cannot be enforced in court.