Atlanta-based Cardinal Digital Marketing has secured a prominent position on the Atlanta Business Chronicle's 2025 Book of Lists, ranking 18th among the city's largest advertising and marketing agencies. The recognition underscores the company's robust growth and standing in the competitive digital marketing landscape.
The ranking, which is based on the number of full-time Atlanta employees as of January 2025, demonstrates Cardinal Digital Marketing's significant local workforce and economic impact. The Book of Lists, published by The Business Journals, provides a comprehensive overview of influential companies driving local economies through meticulously researched and verified data.
Founded in 2009, Cardinal Digital Marketing has consistently distinguished itself in the industry, particularly within the healthcare marketing sector. The company has previously been recognized as the fastest-growing agency in the Southeast and has been featured on the Inc. 5000 list of fastest-growing privately-held companies multiple times.
Founder and CEO Alex Membrillo expressed pride in the company's recognition, emphasizing their commitment to serving clients across metro Atlanta and nationwide. The agency's specialized approach focuses on developing digital strategies that prioritize client profitability and customer engagement across various marketing platforms.
Cardinal Digital Marketing's service portfolio includes comprehensive digital solutions such as search engine optimization, pay-per-click advertising, social media advertising, web design, and advanced analytics. Their specific expertise in healthcare marketing sets them apart in a highly competitive industry.
The company's repeated appearances on prestigious lists like the Book of Lists reflect its consistent performance and ability to adapt to rapidly evolving digital marketing trends. By focusing on measurable client outcomes rather than vanity metrics, Cardinal Digital Marketing has established itself as a strategic partner for businesses seeking meaningful online growth.


