Billing platform for enterprises Aria Systems announced last week that it closed a $50 million investment.

Rembrandt Venture Partners, Madison Bay Capital Partners, and Hercules Technology Growth Capital joined the round as new investors.

Aria said that “investor interest was fueled by Aria’s continued enterprise success across verticals, including automotive, entertainment, high tech, medical and telecommunications, as well as a wide array of innovative IoT plays.”

The startup’s last funding round was in 2013, in which Bain Capital Ventures led the investment, followed by VMware, Hummer Winblad Venture Partners, and Interwest Partners.

To date, Aria Systems has raised at least $133 million in funds.

Sign up for Funding Daily: Get the latest news in your inbox every weekday.