Captive Service is a portion of Business Process Outsourcing

Business process outsourcing

Business process outsourcing is a subset of outsourcing that involves the contracting of the operations and responsibilities of specific business functions to a third-party service provider. Originally, this was associated with manufacturing firms, such as Coca Cola that outsourced large segments...

 where an organization will use a wholly owned subsidiary

Subsidiary

A subsidiary company, subsidiary, or daughter company is a company that is completely or partly owned and wholly controlled by another company that owns more than half of the subsidiary's stock. The subsidiary can be a company, corporation, or limited liability company. In some cases it is a...

 instead of a Third Party Vendor. The benefit of doing such an arrangement would be to leverage the cost savings of using offshore

Offshoring

Offshoring describes the relocation by a company of a business process from one country to another—typically an operational process, such as manufacturing, or supporting processes, such as accounting. Even state governments employ offshoring...

 resources, while maintaining complete control over process and delivery. The costs of such an arrangement are generally higher than using a vendor.
Captive Service Units have been in the media lately because of large financial firms tied to the Subprime mortgage crisis

Subprime mortgage crisis

The U.S. subprime mortgage crisis was one of the first indicators of the late-2000s financial crisis, characterized by a rise in subprime mortgage delinquencies and foreclosures, and the resulting decline of securities backed by said mortgages....

. Many of the firms had captive service units and as they file for bankruptcy, these units are being sold separately. Specifically, Lehman Brothers

Lehman Brothers

Lehman Brothers Holdings Inc. was a global financial services firm. Before declaring bankruptcy in 2008, Lehman was the fourth largest investment bank in the USA , doing business in investment banking, equity and fixed-income sales and trading Lehman Brothers Holdings Inc. (former NYSE ticker...

, Citigroup

Citigroup

Citigroup Inc. or Citi is an American multinational financial services corporation headquartered in Manhattan, New York City, New York, United States. Citigroup was formed from one of the world's largest mergers in history by combining the banking giant Citicorp and financial conglomerate...

, AIG

AIG

AIG is American International Group, a major American insurance corporation.AIG may also refer to:* And-inverter graph, a concept in computer theory* Answers in Genesis, a creationist organization in the U.S.* Arta Industrial Group in Iran...

 and Merrill Lynch

Merrill Lynch

Merrill Lynch is the wealth management division of Bank of America. With over 15,000 financial advisors and $2.2 trillion in client assets it is the world's largest brokerage. Formerly known as Merrill Lynch & Co., Inc., prior to 2009 the firm was publicly owned and traded on the New York...

 all have captive unit

Captive unit

A captive unit is a business unit of a company functioning offshore as an entity of its own while retaining the work and close operational tie ups within the parent company....

s that are being considered or have already been sold off.