| 1Trust | Trust-Based ITAD | Do we trust the vendor? | Vendor selection and basic reporting |
| 2Review | Reviewed ITAD | Did someone look at the reports? | Basic oversight begins |
| 3Control | Controlled ITAD | Can we demonstrate oversight? | Documented process and evidence retention |
| 4Segregation | Segregated ITAD | Is oversight independent of execution? | Reduced self-review and conflict risk |
| 5Verification | Independently Verified ITAD | Can outcomes be independently confirmed? | Independent verification and defensible assurance |