Home/Broader service
Broader service · experiment portfolio

Experiment Audit for teams making repeated decisions from tests.

A structured review of a defined set of past, running, and planned experiments. I find recurring risks in audience selection, assignment, measurement, implementation, analysis, and rollout decisions.

Send the experiment set or concern as it is. I’ll reply with what is needed to scope the audit.

?

One questionable result may be a test problem. The same weakness across several tests is an experimentation-system problem.

01

Who this is for, and what changes after.

Best for

Teams that run experiments regularly but are unsure whether results generalize, past winners held after rollout, or the same setup and interpretation risks keep returning.

Outcome

You get a reliability map across the reviewed experiments, confidence notes on past conclusions, recurring risk patterns, and a prioritized way to improve future tests.

Decision ownership

The audit covers an agreed experiment set or time period. It is broader than reviewing one test, but it is not a general product strategy or full product-leak diagnosis.

02

The goal is not to relitigate every result.

The audit looks for patterns that change decision quality across tests: who enters, what exposure means, whether metrics represent value, whether implementation preserves the comparison, and how the team turns uncertainty into rollout decisions.

  • What this prevents
  • fixing symptoms instead of leaks
  • metrics drifting away from user value
  • experiments being interpreted without context
  • roadmap work based on partial evidence
03

What gets audited.

01

Test Portfolio

Review the selected past, running, and planned experiments against the decisions they were meant to support.

02

Hypothesis Quality

Check whether tests begin with a causal product hypothesis or merely compare interface alternatives.

03

Audience Patterns

Look for recurring eligibility, exclusion, traffic-mix, and rollout-population mismatches.

04

Assignment & Exposure

Inspect repeated risks in randomization, assignment units, cross-device behavior, contamination, and exposure logging.

05

Metric System

Assess primary metrics, guardrails, metric definitions, and whether teams repeatedly optimize proxies instead of outcomes.

06

Implementation Reliability

Check whether tracking, feature flags, platforms, and releases preserve the intended experimental comparison.

07

Analysis & Interpretation

Review stopping rules, segment analysis, inconclusive results, novelty effects, and how uncertainty is communicated.

08

Decision Process

Trace how results become rollout, iteration, or roadmap decisions and where evidence is being overruled or overstated.

Process

How the audit works.

01

Define the portfolio

We agree which past, running, and planned experiments matter and which decisions need confidence.

02

Review each evidence chain

I inspect hypotheses, audiences, assignment, exposure, metrics, implementation, analysis, and decisions.

03

Find recurring patterns

Individual findings are grouped into the systemic risks that repeatedly weaken results.

04

Improve the next cycle

You receive priorities, reusable review criteria, and a stronger shape for the next experiment.

04

What I deliver.

DELIVERABLE · 01

Experiment Reliability Map

A portfolio-level view of where the experimentation process is strong and where decision risk repeats.

DELIVERABLE · 02

Per-Test Confidence Notes

A concise assessment of which reviewed conclusions remain useful and which need caution.

DELIVERABLE · 03

Recurring Risk Patterns

The systemic audience, measurement, implementation, or interpretation issues that affect more than one test.

DELIVERABLE · 04

Prioritized Improvement Plan

The highest-leverage changes to test design, QA, analysis, and decision-making, ordered by impact.

DELIVERABLE · 05

Reusable Review Standard

A practical checklist your team can use before launch and before accepting a result.

DELIVERABLE · 06

Next Experiment Recommendation

A clearer shape for the next important test, grounded in the audit findings.

Need confidence across more than one test?

Send the experiment set, time period, or concern. I’ll reply with the information needed to scope the audit.

Request experiment audit →Ask by emailNo preparation needed. Send the messy context as it is.