Marketing retention software startup Windsor Circle has closed on $950,000 in new funding and as a result is making several moves targeting ways to drive more growth.

The close on the round of funding was announced early Thursday. It has now raised $2.4 million overall. But there was much more news.

Windosr Circle, led by CEO Matt Williamson, also is going to move its headquarters to the American Underground @Main, a shared office space for startups in Durham.

Why the move?

“Access to The American Underground @Main affords high-growth companies like ours the dynamic office environment and business connections necessary to reach and exceed our goals,” said Andrew Pearson, Windsor Circle’s vice president of marketing.

The moves come after Windsor Circle enjoyed enormous growth in 2012.

“By end of year, Windsor Circle will have achieved customer base growth of 871% in 2012, and revenue growth of more than 3000%,” Williamson told WRALTechWire when he first disclosed the initial funding.

What’s driving the growth?

“We provide big data analytics and enterprise-class integrations that power segmentation, personalization and automation for retailers of all types and sizes,” Williamson explained in the funding announcement. “Case study after case study continue to prove that our platform drives enormous revenue for merchants, while keeping and delighting their existing customers.”

The company also is making seven new hires. It currently has a team of 12.

Williamson and his team are looking for marketing coordinators, salespeople, a client success associate, a product manager, a front-end web developer, and a software developer.

Some of the new cash also will be used to drive customer acquisition.

According to the company, the $2.4 million round was oversubscribed by some 40 percent as investors seek to cash in on the firm’s potential.

Investors include Bruce Boehm, a leading angel investor in the Triangle, and Triangle-based Triangle Angel Partners as well as IDEA Fund Partners, which is based in Durham.

Windsor Circle will host an open house at its new headquarters on Nov. 20 from 5-8:30 p.m.

(Editor’s note: This story was corrected to update the fund-raising total.)