| Compliance Audit | Performance Audit | |
| System Audit | Consistent implementation of a defined system. Promotes stability. | Ability to achieve organizational goals. Promotes change. |
| Process Audit | Ability of the process to perform in accordance with its definition | Ability of the processes to achieve desired characteristics |
| Product Audit | Production of goods or services to defined requirements | Suitability of the goods or services for intended use |
From: Quality Audits for Improved performance – by Dennis R. Arter