| Utility | Warranty |
|---|---|
| The utility is defined as functionality offered by service or product from the customer perspective. | Warranty is defined as a promise that service or product will agree with the need. |
| The utility deals with is what the client gets. | Warranty deals with how service is delivered. |
| The utility should meet the customer requirement, that is, it should fit for the intention. | Warranty should operate the service properly. |
| Utility can increases the performance average. | Warranty can reduce performance variation. |