Bracket Computing, a startup with software that companies can use to securely run their applications and store data on public cloud infrastructure, is announcing today a $46.4 million round of funding. New investors Fidelity Management and Research Co. and Goldman Sachs are participating in the round.

Bracket pushes Computing Cell technology with a lightweight hypervisor, or Metavisor, that’s meant to encrypt corporate data on clouds and unify management of virtual computing resources for applications on multiple clouds. Companies can use their existing IT policies with the Computing Cell.

“Imagine this kind of bubble that sits on top of Amazon,” Bracket cofounder and chief executive Tom Gillis told VentureBeat in an interview. Gillis said there’s nothing quite like it on the market.

Still, the cloud security area has become more vibrant as companies move to adopt cloud infrastructure and storage services. Last week, Amazon Web Services itself announced the Inspector tool to surface potential security issues. Earlier this month, startup Dome9 announced new funding.

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Plans call for hiring of additional software engineers and for further product development. Bracket currently supports Amazon Web Services, and Google Cloud Platform support is in beta. Up next: on-premises data center infrastructure.

Bracket started in 2011 and is based in Mountain View, California. Around 70 people work for the company, and the headcount should double within a year, according to Gillis. Customers include Blackstone, DIRECTV, GE, and Wells Fargo.

In addition to Fidelity and Goldman Sachs, several other investors participated in the round, including Allegis Capital, Andreessen Horowitz, Artis Ventures, Columbus Nova Technology Partners, GE, Norwest Venture Partners, Qualcomm, and Sutter Hill Ventures. To date, Bracket has raised $131.4 million.

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