Testing Regression Strategy

Trigger Boundary

• •Use when verification strategy or release confidence evidence must be designed.
• •Do not use for production observability ownership; use observability-*.
• •Do not use for architecture topology selection.

Goal

Build sufficient verification evidence to prevent regressions.

Inputs

• •Change scope and risk profile
• •Domain evidence for regression suite curation and risk-based test selection
• •Operational, compliance, and rollout constraints

Outputs

• •Regression selection policy with impact mapping
• •Decision log for regression suite curation and risk-based test selection
• •Verification checklist with measurable pass-fail criteria

Workflow

1. •Clarify outcomes and hard constraints for regression suite curation and risk-based test selection.
2. •Produce options and select an approach for regression suite curation and risk-based test selection.
3. •Evaluate trade-offs across security, performance, operability, and maintainability.
4. •Verify decisions using change-impact to regression coverage traceability.
5. •Publish decisions, residual risks, and accountable follow-up actions.

Quality Gates

• •Scope and assumptions for regression suite curation and risk-based test selection are explicit and reviewable.
• •Decision rationale is backed by evidence instead of preference.
• •Rollout and rollback criteria are defined when production impact exists.
• •Residual risks have owners, due dates, and verification steps.

Failure Handling

• •Stop when high-risk change areas are absent from regression gates.
• •Escalate when accepted risk exceeds team policy thresholds.