Until 2018, MultiSig defined the standard for secure transaction approvals. Then, leading institutions recognized that threshold wallets, commonly known as MPC wallets, offered a more secure and flexible alternative. These wallets appear on-chain as a single signature but distribute key shares across multiple parties, removing single points of failure and reducing the complexity and cost of transaction management. This overview details how threshold (MPC) wallets replace legacy barriers with better interoperability and stronger protection for digital assets.