Sustain: How We Partner Long Term (External)
External Sustainment Scope and Activities
External Sustain partnerships support organizations that evaluate, oversee, or rely on accessibility conditions across digital systems they do not directly operate.
All external Sustain engagements are grounded in formal accessibility assessment. Each organization, product, or environment enters Sustain after a defined assessment baseline, ensuring that ongoing work is accurate, traceable, and evidence-based.
From that foundation, Sustain provides structured, ongoing support to monitor conditions, review remediation activity, and maintain visibility over time.
Typical Sustainment activities may include:
- ongoing accessibility reviews for defined organizations, systems, or products
- monitoring accessibility conditions over time to detect drift, recurring barriers, or emerging risk
- collaboration on remediation planning and sequencing following findings
- review of remediation progress against agreed scope, milestones, and timelines
- validation of corrective actions and documentation of completion
- development and maintenance of accessibility evidence artifacts
- advisory support interpreting accessibility findings, patterns, and implications
Scope, cadence, and duration are established per organization and may operate on scheduled cycles or continuous review models depending on engagement needs.
Measuring Progress and Supporting Resolution
External Sustain engagements focus on continuity, not snapshots.
Par Sentio supports the definition and tracking of accessibility indicators that help external partners understand whether remediation is progressing, stalling, or diverging from agreed expectations.
Depending on scope, this may include measures such as:
- progress against documented accessibility barriers
- patterns of recurring or unresolved issues
- completion status against defined remediation plans
- changes in accessibility health over time
- consistency and quality of supporting documentation
These measures support responsible oversight, progress validation, and decision processes.
The goal is to provide clear visibility into where accessibility improvements are occurring, where obligations are not being met, and where further review or action may be required.
External Sustainment Engagement Models
External Sustain partnerships are structured around how Par Sentio supports assessment-grounded oversight, remediation tracking, and ongoing accessibility review. Engagement models are designed to remain assessment-anchored, scoped, and adaptable over time.
Engagement models may include one or more of the following:
| Engagement Model | What This Supports | How Par Sentio Partners |
|---|---|---|
| Post-assessment monitoring | Continued visibility into accessibility conditions following formal assessment. | Conducts recurring accessibility reviews against the original scope and documents changes over time. |
| Remediation plan support and tracking | Structured oversight of corrective efforts and timelines. | Collaborates on remediation planning, reviews progress, and maintains evidence of actions and completion. |
| Ongoing validation and review | Continued evaluation of accessibility claims or stated improvements. | Performs scheduled testing and documentation updates to support informed reliance. |
| Resolution and closure support | Evidence development to support confirmation of remediation completion. | Supports documentation, verification, and accessibility-focused summaries aligned to resolution needs. |
| Portfolio or multi-organization monitoring | Ongoing review across multiple organizations or digital environments. | Maintains structured accessibility review programs across defined portfolios. |
| Incident and escalation analysis | Accessibility analysis when complaints, filings, or concerns arise. | Supports investigation, documentation, and accessibility interpretation within defined scopes. |
Boundaries of External Sustain
External Sustain partnerships are designed to support accessibility analysis, remediation visibility, and responsible decision processes.
To maintain clarity and integrity:
- Sustain engagements are grounded in defined assessments and documented scope
- Sustain does not replace legal counsel, regulatory authority, or organizational accountability
- Sustain does not certify compliance or issue determinations of legal standing
- Sustain provides accessibility findings, documentation, and interpretive support, not enforcement
- Sustain reflects diligence, structured review, and evidence development, not expert testimony
Par Sentio provides informed accessibility support so external partners can make responsible, well-founded decisions within their own professional and legal roles.
This clarity protects the partnership, the work, and the decisions it informs.