Net Tango supports a number of intranet and extranet web based systems for AT&T. Net Tango began working with AT&T, formerly BellSouth, in 1997. Among the many AT&T projects we support, Net Tango is especially proud of two systems: The AT&T Customer Rules! and CORE. The AT&T Customer Rules! is an employee award and recognition program designed to support and encourage seamless customer service across the organization and around the world. The site is used by over 400,000 employees to recognize and reward good customer service and to nominate and deliver awards to customer service leaders. CORE CSM is an enterprise financial application used to manage all aspects of AT&T's philanthropic expenditures. CORE Campaigns is a stakeholder and campaign management application used by External and Legislative Affairs.