The Best CMOs Don’t Just Run Marketing ft. Kellyn Smith Kenny of AT&T

Plus, why great marketing leaders need courage and patience.

The fastest way to shrink marketing’s influence is to treat it like it’s just another department. 

In this episode of Marketing Vanguard, Jenny Rooney sits down with Kellyn Smith Kenny, chief marketing and growth officer at AT&T, for a sharp conversation about what the CMO job actually demands.

Kellyn argues that marketing should operate as an engine for growth, gets into why leaders are responsible for raising the bar, and why conviction without patience can backfire

She also addresses what she sees as the foundational mistake marketers risk making with AI, and what must happen even before the first prompt.

What you’ll learn:

  • Why marketing leaders need to understand how the entire business makes money
  • Why finance and operations should be allies, not neighboring departments
  • What separates being a marketing manager from being a company leader
  • Why great leaders create the conditions for people to do the best work of their careers
  • Why raising the bar requires conviction and patience at the same time
  • Why high-quality data has to come before meaningful AI adoption
  • Why human insight still belongs at the center of strategy and creative work

About our guest:

Kellyn Smith Kenny is chief marketing and growth officer at AT&T. Here, she brings marketing and growth together—a combination reflected in how she thinks about the CMO role itself.

Her career has taken her across major brands and very different stages of company growth, including Capital One, Uber, Hilton and AT&T, giving her a broad view of what marketing leadership looks like inside both established organizations and businesses undergoing major change.

Her approach is simple: marketing cannot operate as an isolated function. It has to understand the economics of the company, build strong relationships across the organization and create the conditions for both the business and its people to perform at a higher level.

Episode Highlights: 

[10:43] Marketing Is an Engine for Growth — Kellyn strips the CMO role back to first principles: marketing is there to help grow the company. A marketer cannot stay exclusively focused on campaigns, brand or customer communications. They need to understand how the organization makes money, how it operates and where time, resources and influence actually flow. Her logic is simple: if you do not understand the business, you cannot credibly claim to be driving its growth.

[11:57] Your Job Is to Create the Best Work of People’s Lives — Kellyn defines leadership around the environment you create for other people. The job is to give talented team members the conditions to thrive and produce the best work they are capable of, while refusing to let the standard stand still. That means the bar keeps rising because great leadership is not about protecting the team from expectations. 

[12:15] Be a Company Leader, Not a Marketing Manager — Kellyn makes a deliberate distinction: she says “leader,” not “manager of the marketing organization.” That difference carries weight. A senior marketer’s responsibility does not end at the borders of their function. Company leaders help create a clear, galvanizing purpose for the entire organization. The moment a CMO thinks their job is simply to optimize the marketing team, they have made the role smaller than it needs to be.

[16:18] Conviction Without Patience Is Not Leadership — You have to be bold enough to explain what excellence looks like. You also have to be patient enough to bring people with you. Kellyn’s point cuts against the caricature of the transformational leader who arrives, declares the answer and expects instant change. Raising standards requires conviction and changing an organization requires time. The hard part is holding both at once without compromising either.

[19:51] AI Doesn’t Start With AI — Before AI comes data. Kellyn argues that world-class marketing depends on high-quality information underneath every investment decision and that human insight still needs to inform strategic and creative judgment. AI can accelerate what sits on top of that foundation, but it cannot magically repair a weak one. The sharper question for marketing leaders is not simply, “How are we using AI?” It is, “What are we feeding it?”

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Jenny Rooney

Jenny Rooney is Chief Brand and Community Officer, leading strategy for the overall ADWEEK brand as well as the ways in which we serve and support our audiences with high-value content, products, partnerships and experiences, notably through our community programs such as Marketing Vanguard.