Dell has spent $3.9bn (£2.4bn) on Texan-based systems integrator Perot Systems.
Founded in 1988 by failed US presidential candidate Ross Perot, Perot Systems provides hardware, software and services for a range of verticals, including healthcare, government and finance.
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PC maker Dell has hinted this year that the stockpiles of cash it was sat on had been burning a hole in the seat of its pants and boosting its services business is an obvious priority given its size relative to rivals.
Michael Dell, CEO at the supplier, said in a statement that the acquisition was a "premium asset" which provided the potential for "immediate and long term growth", representing a quick fix for its slow-to-build services base.
"This significantly expands Dell's enterprise-solutions capabilities and makes Perot Systems' strengths available to even more customers around the world," he said.