The. Independent Agents of Texas (IIAT). is dedicated to supporting the success of independent insurance agents. It offers vital products, services, and advocacy. As one of the largest state associations of its kind, IIAT serves approximately 1,500 agencies and over 12,000 agents and insurance professionals. The. IIAT Advantage E&O Team. part of IIAT’s licensed insurance agency, specializes in the placement of professional liability and managemen...