Alex Membrillo

Alex Membrillo

Strengthened Domain Authority and Dramatically Increased Lead Generation

Alex Membrillo

Alex Membrillo is the CEO of Cardinal Digital Marketing, a digital marketing agency focused on growing multi-location companies. His work as CEO of Cardinal also recently earned him the honor of being selected as a member of the 2018 Top 40 Under 40 list by Georgia State University as well as 2015 and 2016 Top 20 Entrepreneur of metro Atlanta by TiE Atlanta, Atlanta Business Chronicle’s 2016 Small Business Person of the Year and Digital Marketer of the Year by Technology Association of Georgia (TAG).

Cardinal Digital Marketing has experienced exponential growth under Alex’s leadership, being consecutively named on the Inc. 5000 list of fastest growing privately-held US companies for the last three years. Alex’s innovative approach to digital marketing has transformed the industry and delivered remarkable results to clients of all sizes and markets. He has been featured in leading national publications including The Business Journals, Entrepreneur, Search Engine Journal, and The Wall Street Journal. He has also served as an expert speaker for conferences including the American Marketing Association, SouthWired, and Vistage Executive Leaders, where he spoke on his unique approach to Millennial Management to over 400 CEOs.



Alex invested in our service at Interview Connections with a goal to increase Cardinal Digital Marketing’s domain authority so his company would continue to be found easily through Google searches.


Alex came to Interview Connections after having no success working with a freelancer to book him on podcasts. He took a recommendation from David Baker’s blog post, Launch Your Career as a Podcast Guest to work with an established podcast booking agency and chose Interview Connections.

In order to help Alex meet his goals for podcast interviews, his Booking Agents at Interview Connections focus on podcasts whose websites have a high domain authority and are speaking to his target audience of marketers and CEO’s looking to expand their brand. While his expertise lies in healthcare marketing, Alex is also open to reaching marketers from any industry as they all could benefit from the services at Cardinal Digital Marketing.

His Booking Agent team at Interview Connections books him on podcasts with the following criteria:

  • Business and marketing shows with a large enough audience so he can reach the most potential clients
  • Podcast websites that have a high enough MOZ ranking to ensure a quality backlink to his website


Since Alex’s podcast interviews started going live, his company’s SEO has become even stronger. Cardinal also experienced their strongest 90 days of lead flow to date. Alex has had to hire three new employees in the last few weeks alone to handle the increased number of leads. Alex also notes that backlinks on quality websites are not easy to obtain and the links he has gained through podcast interviews have proven to be incredibly valuable.

Alex considers podcasting a long term marketing strategy and doesn’t plan on stopping.

You can find Cardinal online at

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