Customers can buy data center space in a number of ways. One of the most popular is colocation, tenants buy space by the rack, cabinet or cage. Larger requirements typically use the wholesale data center model, in which a tenant leases a finished suite of “turn-key” raised-floor space. The dividing lines between the two have blurred in recent years, which wholesale providers pursuing smaller deals while colo specialists add suites to their offerings. Both retail colocation providers and companies selling wholesale data center space are pushing into new markets, extending these IT outsourcing services to new audiences.