Corporate marketing
Inside large organizations, Jay saw how easily a brand promise can separate from the teams, data, decisions, and experiences that have to make it true.
Read the corporate lessonMarketing Accountability Council · A developing idea
The Trust Index is a Marketing Accountability Council concept for evaluating marketing more broadly than campaign metrics. It asks whether marketing creates value, keeps its promises, treats people with respect, and can show the evidence behind its choices.
How the sites connect
My corporate career taught me that marketing problems are rarely only messaging problems. They are often leadership, data, ethics, incentive, and operating problems. The Trust Index brings that learning into one question: how should marketing earn trust through the product, price, place, promotion, and experience people actually encounter?
The through-line
This ecosystem of products, services, and organizations is designed to make accountability practical. It helps you become accountable to yourself and your company: what you believe, what you choose, what you invest in, and what people experience because of those choices. It also keeps Jay accountable to the partnerships, products, writing, and field-building work he has chosen to invest in.
Inside large organizations, Jay saw how easily a brand promise can separate from the teams, data, decisions, and experiences that have to make it true.
Read the corporate lessonJay’s work with the IAE Governance Lab connects ethical principles to the operating and technical questions that make advertising systems inspectable.
Read the IAE case studyMAC gives the accountability conversation a public home: marketing should be examined by its effects, promises, evidence, and respect for people.
Read the MAC case studyClean Data Alliance extends the work into permission, provenance, quality, governance, and responsible AI/data use because trust depends on the information underneath decisions.
Read the CDA case studyThis is Jay’s new era of work: helping leaders name the real problem, align the people who can change it, and make the promise hold in practice.
Work with JayWhy a broader view
A brand’s trust is shaped by what it sells, what it costs, where and how people get it, and how it is promoted. Looking at advertising alone leaves much of the customer experience out.
Reach, clicks, and conversions describe activity. They do not, by themselves, show whether a promise was clear, a customer got real value, or the organization acted responsibly.
Teams need to explain the choices behind marketing, the evidence they used, and how the experience matched what they told people to expect.
A useful lens
Does the product or service provide the value people are led to expect?
Can people understand what they will pay and what they will receive?
Do the channels and experience make it possible to get the promised value?
Does communication represent the offer clearly and help people make informed choices?
These are plain-language questions for exploring the idea, not a published Trust Index rubric, score, certification, or assessment.
Where the idea stands
In a July 2025 interview, Jay described the MAC Trust Index as a pilot idea: an evaluation scorecard drawing on themes from MAC writing and examining marketing as a whole. This page summarizes that premise. It does not represent a current live tool or claim that a final methodology has been released.
Trust Gap is the MAC Trust Index experience. It connects to Jay’s wider work on marketing accountability, clean data, and advertising ethics. It is separate from the developing AI Advertising Trust Stack described on the VRFD page.
What a company offers, what it promises, and what people experience should hold together. Trust Gap is the Trust Index experience.
Open Trust Gap Talk with Jay about marketing accountability