PALO ALTO — Technology deals buoyed the overall mergers and acquisitions outlook in 2013, and in 2014, business already appears to be booming.

The tech sector saw more dealmaking in recent months than at any point since the millennial tech boom, according to third-quarter findings compiled by accounting firm Ernst & Young, which showed a mix of eye-popping big deals and an increase in smaller-ticket volume. Analytics on the fourth quarter will come out in a few weeks.