Hi, I’m Lauren Lannan, Founder of Great Island Growth.

For more than 15 years, I’ve helped companies make data-driven decisions about marketing, finance, business strategy, and technology, and, most importantly, how those pieces work together to drive growth.

Over the course of my career, I’ve worked with both DTC and B2B companies, from growing businesses to established brands including Procter & Gamble and The Home Depot. My experience spans finance, advertising technology, marketing measurement, and SaaS leadership, giving me a broad view of how companies grow and where things can get stuck.

I’ve worked closely with executives and their teams, not simply as an outside advisor, but as an extension of the business. I learned how to get underneath a business challenge, bring the right people and information together, and help move an organization from a decision to action.

That’s the perspective I bring to Great Island Growth. I help leaders identify where growth is being won or lost, determine where to focus, and turn strategy into something their teams can actually execute. That can mean improving your marketing approach, strengthening measurement, clarifying priorities, or helping your organization navigate the people, processes, and communication required to make a change stick.

I personally lead every engagement, bringing a practical, hands-on approach shaped by years of working both with businesses and inside them.

Practical strategy. Clear measurement. Real growth.