noun
performance guarantee; performance assurance
A formal term used in business, engineering, and contracts to indicate that a product or system will meet specified performance standards.
この製品には性能保証が付いています。
This product comes with a performance guarantee.
契約書に性能保証の条項を追加した。
We added a performance assurance clause to the contract.
品質保証 focuses on quality assurance in general, while 性能保証 specifically guarantees performance metrics.
Compound of 性能 (performance) and 保証 (guarantee).