Alliance Data Systems Corporation is a publicly traded provider of loyalty and marketing services, such as private label credit cards, coalition loyalty programs, and direct marketing, derived from the capture and analysis of transaction-rich data.

Alliance Data was formed from the December 1996 merger of two entities: J.C. Penney's credit card processing unit and The Limited's credit card bank operation, named World Financial Network National Bank.

In August 1998, Alliance Data acquired LoyaltyOne, then-branded The Loyalty Group Canada, for $250 million. The deal gave Alliance Data two valuable business enhancements, Canada's Air Miles Rewards Program and the company behind the popular Air Miles program, LoyaltyOne.

In May 2007, Alliance Data and The Blackstone Group, a private equity firm, announced plans for Alliance Data to be acquired by The Blackstone Group. In April 2008, Alliance Data terminated the merger agreement with Blackstone Affiliates.

Ed Heffernan was promoted to president and CEO of Alliance Data in February 2009, after being with the company since 1998.

Card Services is a provider of integrated credit and marketing services including private label, co-branded and commercial credit card programs. Alliance Data Card Services manages over 135 card programs for retail brands such as Victoria’s Secret, J.Crew, Eddie Bauer, Buckle, HSN, Pottery Barn and Pier 1 Imports.

In 2011, Alliance Data, in partnership with NICE Systems, was honored with the Operational Leadership Award for its customer care centers by Ventana Research.

Alliance Data Card Services maintains two banks to manage the funding and receivables for its clients' credit programs. In September 2012, the banks rebranded their names from WFNNB (World Financial Network [National] Bank) and WFCB (World Financial Capital Bank) to both operate under the Comenity name, as Comenity Bank and Comenity Capital Bank, respectively.

LoyaltyOne, located in Canada, provides loyalty marketing programs for North American brands in the retail, financial services, grocery, petroleum, travel, and hospitality industries.

Five businesses make up the LoyaltyOne: Air Miles national reward program, in which approximately two-thirds of Canadian households participate; Colloquy; LoyaltyOne Consulting; Precima; and Squareknot.

Hewitt Associates named LoyaltyOne in their "2014 List of the 50 Best Employers in Canada."

Epsilon provides a broad range of loyalty marketing services spanning database marketing, direct mail, email marketing, web development, loyalty programs, analytics, data services, strategic consulting and creative services, among others.

Ad Age has ranked Epsilon among the top marketing services firms and direct marketing agencies for several years, and Epsilon has the distinction as being the Top US Agency From All Disciplines and Top US CRM/Direct Marketing Agencies for 2012. It sends billions of permission-based emails every year. Acquired by Epsilon in 2011, Aspen Marketing Services is a marketing services agency headquartered in Chicago, Illinois with locations in the United States and Canada. In 2012, Epsilon reached an agreement to acquire the Hyper Marketing (“HMI”) group of companies, the largest privately held digital marketing services agencies in the United States, for about $460 million.

In March 2011, Epsilon detected unauthorized access to its email database, resulting in the theft of email addresses of its clients' customers.

In late February 2013, Facebook announced partnerships with four companies, including Epsilon, to help reshape its targeted advertising strategy.

Because of Epsilon’s growth over the past several years, the company relocated its headquarters to the former Nokia regional headquarters space in Las Colinas, Texas, near Dallas.

In March 2014, 60 Minutes interviewed Bryan Kennedy, chairman and CEO of Epsilon, as part of its segment, The Data Brokers: Selling your personal information.

In 2010 Epsilon failed to heed warnings to secure data. In March 2011 it was discovered that email addresses from customers of 50 client companies were stolen. The company quickly notified people of the breach. In June 2011 company executives were called before congress.