GSD&M

Longtime clients include: Southwest Airlines [8] (30+ years), the PGA Tour (20+ years), Lennox International (15+ years), AT&T (15+ years), the U.S. Air Force,[9] (10+ years). Other notable clients include Walgreens,[10] PetSmart,[11] Northwestern Mutual,[12] Popeyes,[13] and Goodyear.[14]

Recently the agency was awarded the business for Chipotle[15] and Hampton Inn and Suites.[16]

The agency started with local retail accounts and expanded to more regional work. In 1986, the agency created the Don't Mess with Texas anti-litter slogan for the Texas Department of Transportation.

In the 1990s GSD&M began to acquire more national brands outside of Texas and was regarded as a "creative hot-shop."[17] The agency relinquished Chili's, DreamWorks, Frito-Lay, Fannie Mae and UnitedHealthcare in 2006–2007. The agency's Omnicom sibling, BBDO, was given the lead on the AT&T account, although GSD&M still has a portion of the business.

The agency was known as GSD&M until August 27, 2007 when it changed its name to GSD&M's Idea City.[18] "Idea City" was previously the name of the agency's Austin headquarters. The "Idea City" name was dropped from the firm name in January 2011.[19]

On February 5, 2009, GSD&M founder Roy Spence published It’s Not What You Sell, It’s What You Stand For. The book, co-authored with Haley Rushing, is a business book that suggests the key to high-performing organizations is that they have a purpose. Purpose, according to the book, is defined as “a definitive statement about the difference you are trying to make in the world.”

GSD&M uses "Purpose-based branding" in its approach to their clients.[20]

In 2001, following the September 11 attacks, the firm created the public service announcement short film I am an American for the Ad Council.[21]

In January 2016, Blue Bunny Ice Cream appointed GSD&M as its lead media partner.[22]