Contract enforcement is the set of legal, procedural, and technological mechanisms by which the obligations set out in an agreement are made binding and are upheld when a party fails to perform, ranging from courts and arbitration to automated on-chain execution. Traditional enforcement relies on dispute resolution processes and judicial remedies, whereas digital and blockchain-based approaches encode enforcement logic directly into self-executing code or arbitration protocols. Effective contract enforcement is a precondition for trust in both commercial transactions and decentralised digital agreements.