ESTRI metrics are operational, audit-ready, and provable from system signals — not survey opinions. Each metric has a defined source, a documented formula, and a traceable connection to the talent decisions it informs. When an ESTRI metric moves, it’s because something observable changed in the workforce and the movement can be defended to an auditor, a board, or an executive committee the same week it happens.

Every metric is calculated directly from signals already captured in the TalentGuard system: standards defined in the Intelligent Role Studio, evidence logged through Talent Assessment and 360 Feedback, approvals recorded through governance workflows, decisions traced through Talent Insights. Nothing is derived from self-reported surveys, sentiment scores, or AI inference alone. Every metric is reproducible from the underlying record.

Four metrics, established in sequence, each enabling the next. Start with Skill Trust Coverage to establish the data foundation. Add Evidence-Backed Skill Rate to expose the gap between belief and proof. Layer in Readiness Coverage Rate to translate the framework into a concrete workforce question. Close with Decision Defensibility Rate, the bottom-line metric every board and audit committee asks about. The remaining six metrics extend the framework once these four are improving.

Each metric category measures one pillar of the ESTRI framework. Skill Trust metrics (Coverage, Evidence-Backed Rate, Currency Index, Role Standard Variance) measure the foundation. Governance Layer metrics (Skill Signal Convergence) measure how standards converge across sources. Readiness Engine metrics (Coverage Rate, Lift Rate, Time to Readiness) measure who is ready and at what trajectory. Defensible Decisions metrics (Decision Defensibility Rate, Skill Truth Index) measure outcomes.

The Skill Truth Index is the composite executive metric of the ESTRI framework. It combines coverage, evidence quality, currency, and signal convergence into a single defensibility score that summarizes the trustworthiness of an organization’s skill data. It’s the figure that goes on the CHRO dashboard for the board — the one number that captures whether workforce decisions can be defended.

It varies by industry and starting maturity. Most enterprises measure first-time Skill Trust Coverage between 15–30%, Evidence-Backed Skill Rate below 20%, Readiness Coverage 40–60% across critical roles, and Decision Defensibility Rate below 25%. A governed enterprise standard is 75%+ coverage, 65%+ evidence backing, 80%+ readiness coverage, and 90%+ decision defensibility. The starting point is not the failure — failing to measure the starting point is.

HRIS and BI tools measure workforce activity — who was hired, promoted, or completed training. ESTRI metrics measure workforce capability — who has the skills the organization’s roles require, with what evidence, at what rate of change, with what defensibility. The former describes what happened. The latter tells you whether the workforce can do what your strategy requires next.