We solve problems, communicate strategically, enhance reputations, create events, manage crises and build relationships that endure.

SDI is a woman-owned small business. We are a full-service international public affairs and strategic communications agency. Clients stay with us, return to us and recommend us because we earn their respect and trust.

Susan Davis Inducted into Hall of Fame

Susan Ann Davis, Chairman of SDI, was recently inducted into the Communications Hall of Fame of Ragan Communications’ Top Women in Communications Awards.

Susan is a pioneering woman business owner and internationally known for her expertise in strategic positioning, government relations, and crisis communications. She has personally represented more than a dozen countries on issues ranging from economic crisis to nation building and trade expansion. During the past four decades, she has grown SDI into a global public affairs and strategic communications powerhouse that provides counsel worldwide to heads of governments, NGOs, and industry.

Who We Are

Susan A. Davis

Judith H. Whittlesey
Executive Vice President

Tom E. Davis
Vice President

Sean O’Leary
Vice President

What We’re Saying

The Importance of Remembering

The Importance of Remembering

Audie Murphy was a hero on screen and in real life. One of the most honored American soldiers of WWII, his story reminds us why we pay tribute on Memorial Day.

read more
Reflections on Two Years of The COVID-19 Pandemic

Reflections on Two Years of The COVID-19 Pandemic

On St Patrick’s Day 2020, we gathered for lunch at the SDI offices one last time before heading off to work from home due to the COVID-19 pandemic. It was the last time we’d all be together for a very, very long time.

read more

Our NAICS Codes

NAICS Code Category
541430 Graphic Design Services 
541611 Administrative Management and General Management Consulting Services 
541612 Human Resources Consulting Services 
541613 Marketing Consulting Services 
541618 Other Management Consulting Services 
541690 Other Scientific and Technical Consulting Services 
541720 Research and Development in the Social Sciences and Humanities 
541810 Advertising Agencies 
541820 Public Relations Agencies 
541830 Media Buying Agencies 
541850 Outdoor Advertising 
541890 Other Services Related to Advertising 
541910 Marketing Research and Public Opinion Polling 
541990 All Other Professional, Scientific, and Technical Services 
561920 Convention and Trade Show Organizers