38. LINDA DILLMAN, CIO, Wal-Mart Stores
Key development: The industry's first major implementation of EPC-based RFID technology.
What's next: A rollout of RFID across the United States.
Linda Dillman had plenty of credentials to be on SN's Power 50 list last year, but her resume got even stronger since then.
Any chief information officer at Wal-Mart is by definition a power player in food retailing, given the company's status as the standard-bearer for