UC4, a Bellevue maker of IT process automation software, has been purchased by private equity firm EQT for $270 million. The company had previously been owned by The Carlyle Group, which purchased the company in 2006.

UC4’s software is used by more than 2,000 companies such as Cracker Barrel and DoubleClick, helping them automate tasks and move faster as they adopt cloud-based systems. The company’s customer base is growing, with revenues for the last fiscal year of $76 million.

“We are achieving these strong results even in a challenging economy on the strength of our products and because our employees are executing at a much higher level than our competitors.” said CEO Jason Liu in a release.

UC4 has kept a relatively low profile, with a promotional video even stating that it is “the most important software company you’ve probably never heard of.” Here’s Liu giving an overview of the company:

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