Dyn has raised $ 50 million as it looks to grow its Internet performance management (IPM) tech globally and expedite product development.

Founded in 1998, the Manchester, New Hampshire-based firm offers companies a cloud-based platform to optimize their online performance, with tools to monitor and control applications and infrastructure. These may include using data and analytics to reroute traffic and ensure end-users aren’t impacted by slow response times, for example. Big-name brands that use Dyn’s technology include Netflix, Twitter, LinkedIn, and Visa. Dyn claims that “eight of the top 10 Internet services / retail companies in the Fortune 500” use its services, in addition to six of the top 10 entertainment companies.

The latest cash influx was raised entirely from Pamplona Capital Management, a private equity firm based out of London and New York. “Dyn has built a strong franchise based on running the fundamental and critical Internet infrastructure needs for its brand name customers,” said Justin Perreault, partner at Pamplona.

Dyn closed a chunky $ 38 million Series A round back in 2012, so this latest round takes its total funding to almost $ 100 million.