But the Ernst and Young report said the sector is not in "bubble" territory and that the vast majority of the deals over the past year were based on "reality-based" valuations.
The report counted 3,512 mergers or acquisitions in the tech sector in 2014, for a total value of USD 237.6 billion, the highest figure since 2000.
The pace slowed a bit in the fourth quarter, with 959 deals and a total value of USD 44.9 billion, EY said.
"Many buyers in other regions targeted US technology companies as part of a search for growth in an uncertain global economy," the report said.
EY analysts said 2015 will likely be another strong year for deals because of the prospects for innovation.
"Technologies that are transforming entire industries -- or have the potential to do so -- continue to drive technology M&A (mergers and acquisitions)," the report said.
The report said that despite the surge in investment "it was no bubble."
"So while 2015 may not hit the same lofty highs as 2014, we fully expect another robust year of technology M&A in response to the transformations sweeping technology and rippling through all industries of the global economy."
The report said the largest investments came in the "Internet of Things," and semiconductors for various connected devices.
Other big segments included security, marketing and advertising and cloud-based services.
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