Sysco, an acronym for Systems and Services Company, is the world's largest broadline food distributor; it has more than 600,000 clients in a wide array of fields. Management consulting is also an integral part of their services. The company operates approximately 330 distribution facilities worldwide; providing service to over 90 countries.

In 1996 Sysco was the third largest company in Houston. It had over 30,000 employees. In 2002, Sysco purchased SERCA Foodservices and renamed it Sysco Canada. SERCA had been owned by the supermarket giant Oshawa Group, who were acquired by Sobeys in 1998.

In 2003, Sysco purchased Asian Foods, the largest Asian foods distribution in North America. The first group of Asian Foods joined Sysco Kansas City in 2006, followed by Asian Foods Chicago joining Sysco Chicago in Sep, 2009.

In 2009 Sysco acquired Pallas Foods, the largest food distributor in Ireland. Continuing the expansion of their Irish offerings, in 2012 Sysco purchased Crossgar Foodservice for an undisclosed amount.

According to wikipedia