Direct Digital Holdings, Inc. engages in an end-to-end, full-service programmatic advertising platform, which focuses on advertising technology, data-driven campaign optimization and other solutions. It operates across multiple industry verticals such as travel, healthcare, education, financial services, and consumer products with an emphasis on small- and mid-sized businesses transitioning into digital with digital media budgets. The company was founded by Mark D. Walker and Keith W. Smith on June 21, 2018 and is headquartered in Houston, TX.