Technology mergers and acquisitions have soared since 2002, with buyers worldwide spending US$1.2 trillion to acquire nearly 14,000 companies in hardware, software and telecommunications, according to The 451 Group and its mergers and acquisitions KnowledgeBase, a database of technology deals. Technology and telecom acquisitions in 2006 totaled $409 billion -- more than similar deals of 2002, 2003 and 2004 combined. In the first quarter this year, 20 deals exceeded $1 billion, while just 10 did so in last year's first quarter. But the most significant deals aren't necessarily the most expensive. Here are three technology mergers whose resulting products promise to have lasting influence in the enterprise.