Dr. Alexa D'Agostino—known as The Doctor of Marketing—is a serial 8-figure entrepreneur, investor, celebrity marketer, and award-winning business strategist who helps companies launch, scale and exit confidently.

Alexa created the Marketing by Modification™ framework—an execution-first, data-powered approach that’s helped drive over $6B in revenue and led to 9-figure exits for clients. She and her team combine brand, funnels, content, and automation with high-converting websites, scalable tech and integrated AI—all engineered to grow revenue and prepare companies for acquisition.

With a client roster that includes Skype, American Express, Mercedes-Benz, MTA, Hard Rock Hotels, Versus Games, Byte Federal, Duck Tape, and more, Alexa has scaled over 400 companies and built high-performing teams across nearly every industry: tech, fintech, healthcare, SaaS, crypto, beauty, real estate, education, gaming and beyond.

What types of companies do you find most interesting?

Companies that disrupt, solve real problems and scale fast. I love service-based businesses, especially those stuck at six figures trying to hit seven or eight. That’s where I thrive. I like bold brands that want to grow and aren’t afraid to challenge the norm.

What do you think surprises founders most when they start companies?

That talent isn’t enough. Most founders think being good at what they do is all it takes. It’s not. Success comes from marketing, sales and mindset. If you can’t sell it, you don’t have a business.

Which mentor has influenced your work the most?

Dan Kennedy. He taught me the power of direct response marketing and the importance of clear messaging. He showed me it’s okay to be polarizing and bold.

Five things you couldn’t live without?

My phone. Canva. A whiteboard. My dogs. Strong coffee and strong Wi-Fi.

What is your favorite book?

The 10X Rule by Grant Cardone. It’s a solid reminder that average doesn’t win. Taking big action does.

What is the best advice you’ve ever received?

Build the business you want, not the one you think you should. Do it your way, not someone else’s.