Private equity firm Great Hill Partners has bought into Vista Equity Partners’ portfolio business Fusion Risk Management, a provider of cloud-based operational resilience, business continuity and risk management software and services.

Terms of the deal were not made available.

Great Hill’s investment comes four years after Vista picked up the company. Vista will retain a “significant” minority stake in the business, along with Catalyst Investors and Level Equity Management.

Fusion was founded in 2006 by a team of founders including David Nolan, Bob Sibik, John Jackson and Victor Fricas. The company says the new majority investment will allow it to enhance its product innovation capabilities, while continuing to accelerate several attractive organic and inorganic growth opportunities.

“Fusion is a clear leader in the risk management space, driving unparalleled value for its customers by providing them with the comprehensive tools they need to become more aware, prepared, and resilient,” said Chris Busby, Managing Director at Great Hill.

Boston-based Great Hill Partners’ portfolio of enterprise software companies includes eloomi, BigChange, Auvik, Varicent, Totango and Intapp.

William Blair & Company served as exclusive financial advisor to Fusion Risk Management. Kirkland & Ellis LLP served as legal advisor to Great Hill Partners and to Fusion.