A stability mechanism is the set of financial, economic, and technical features intended to minimize fluctuations in a stablecoin's market value relative to its peg.
A stability mechanism can combine reserve assets, redemption commitments, overcollateralization, liquidation rules, arbitrage incentives, supply adjustments, or linked tokens. The design determines how the arrangement responds when market value moves away from the peg and which participants absorb losses or liquidity pressure. Reserve-backed, crypto-collateralized, and algorithmic arrangements can therefore pursue a similar price objective through different balance-sheet and incentive structures.
A stability mechanism describes the architecture supporting stable value. Peg maintenance describes how that architecture operates in practice to keep the market price near the target.
Classifying the stability mechanism helps distinguish stablecoins with similar price targets but materially different liquidity, collateral, governance, and failure risks.
A reserve-backed design can rely on liquid financial assets and redemption at par, while an algorithmic design can rely on automated supply changes and arbitrage incentives.