Updated:
Stratoscale
Ariel Maislos's Stratoscale built an AWS-compatible private cloud stack acquired by Quanta in 2019 for its enterprise data center software.
Stratoscale
Stratoscale was founded in 2013 by Ariel Maislos, a serial entrepreneur who previously founded Anobit Technologies, an enterprise flash-storage company acquired by Apple in 2011. The founding team, based in Sunnyvale and backed by an Israeli R&D center in Herzliya, set out to commoditize the cloud control plane. Their thesis — now validated by the market — was that enterprises wanted public-cloud programmability without surrendering hardware control to a single vendor. The company's core product, Symphony, functioned as a drop-in AWS Region. It translated the S3, EC2, and VPC API sets into a software-defined data center layer that ran on x86 servers. This allowed banks, defense contractors, and telecoms to operate a compliant, low-latency AWS-compatible cloud behind their own firewall — a strategy that attracted notable co-investors. Confirmed investors included Battery Ventures, Bessemer Venture Partners, Intel Capital, SanDisk, and Qualcomm Ventures. By its Series C in 2016, Stratoscale had raised a total of $70 million, per public Crunchbase records, to compete directly with Nutanix and SimpliVity on hyperconverged infrastructure while adding the API-compatibility layer that they lacked. Stratoscale operated dual headquarters in Sunnyvale, California, and Herzliya, Israel, with a team that peaked at approximately 100 employees, per LinkedIn aggregate data. The company secured over 25 enterprise design partners, including a large US financial institution that contributed to an open-source Kubernetes-as-a-Service project called Merkury. In November 2019, following a period of strategic repositioning toward AI-driven operations, Stratoscale was acquired by a subsidiary of QCT (Quanta Cloud Technology), the data-center hardware division of Taiwan's Quanta Computer. The acquisition was publicly reported by Israeli business daily Calcalist, which noted that Stratoscale's technology would accelerate QCT's push into composable, software-defined data center solutions. What distinguished Stratoscale from other hyperconverged plays was its foundational bet on API fidelity rather than proprietary management layers. Unlike Nutanix, which offered its own hypervisor and management UI, Stratoscale sold a headless AWS region. Customers didn't adopt a new platform — they adopted the control plane they already knew. This AWS-before-AWS-Outposts architecture made the company an acquisition target for server manufacturers needing a software layer to compete with Dell's VMware integration. The technology's current posture inside Quanta's portfolio remains undisclosed, but the acqui-hire of its machine-learning operations team in mid-2019, flagged by Israeli tech publication CTech, suggests its IP was folded into Quanta's AI-server orchestration roadmap.
General information
Firm type
other
Year founded
2013
AUM
Undisclosed
Location
Region
North America
Country
United States
City
Sunnyvale
Corporate office
Sunnyvale, CA, United States
Principals
Ariel Maislos
Founder & CEO
Erez Cohen
Co-Founder & CTO
Sector focus
Frequently asked questions
What did Stratoscale build before it was acquired?
Stratoscale built Symphony, a software platform that let any x86 server cluster emulate an Amazon Web Services region — translating S3, EC2, and VPC APIs on-premise. It also developed an open-source managed Kubernetes project called Merkury. The firm raised $70 million from Battery Ventures, Bessemer, and Intel Capital, among others.
Who founded Stratoscale and what was their prior exit?
Ariel Maislos founded Stratoscale after selling Anobit Technologies, his previous flash-storage startup, to Apple in 2011 for roughly $400 million. His co-founder, Erez Cohen, previously worked at the Israel Defense Forces' elite Unit 81 technology division and later ran R&D at Anobit.
How did Stratoscale compete with Nutanix and VMware?
Stratoscale's key differentiator was API-level AWS compatibility rather than a proprietary hypervisor. Nutanix and VMware sold closed ecosystems — customers learned their interfaces. Stratoscale sold an interface customers already knew: Amazon's. This let them pitch a no-lock-in, software-only layer that worked on any commodity server.
Which investors backed Stratoscale?
The company's disclosed investors included Battery Ventures, Bessemer Venture Partners, Intel Capital, SanDisk, Qualcomm Ventures, and Cisco Investments. Its Series C round in 2014 was led by Battery Ventures.
What happened to Stratoscale's technology after the acquisition?
In November 2019, a subsidiary of QCT (Quanta Cloud Technology) acquired Stratoscale. Israeli business daily Calcalist reported the deal, noting it would boost QCT's software-defined data center capabilities. The company's AI-operations team was reportedly folded into Quanta's machine-learning server roadmap, but no post-acquisition product has been publicly launched under the Stratoscale brand.
Why did Stratoscale target AWS API compatibility specifically?
AWS was the de facto cloud standard, but many regulated enterprises — banks, defense agencies, large industrials — couldn't run sensitive workloads in a public multi-tenant environment. Stratoscale's bet was that these buyers would pay for a private deployment of the same APIs their developers already used, avoiding both the security hurdle of the public cloud and the learning curve of a proprietary on-prem solution.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
Need institutional-grade insight on family offices?
Altss delivers:
Prefer a guided tour?
We’ll walk you through: