The Dallas/Fort Worth area is known as Silicon Valley of Texas, due to the high concentration of telecommunications companies.
Central Dallas is cabled with more than 160 km of optic fiber.
Although the telecommunications industry was hit hard in the last recession, the majority of Dallas businesses perform better on average than other regional economies.
Companies headquartered in Dallas, Irving, or Mesquite include ExxonMobil—the biggest company (by income) in the world—, 7-Eleven, id Software, Blockbuster, EDS, ENSCO Offshore Drilling, Kimberly-Clark, TXU, Mary Kay Cosmetics, Southwest Airlines, CompUSA, Texas Instruments, Flúor, and Zales.
Corporate headquarters in the suburb of Plano include Frito-Lay, Dr Pepper, and JCPenney.