Sunlight
4 known investors
Cambridge, UK edge infrastructure company offering hyper-converged, Edge-as-a-Service software for distributed sites.
Also known as Sunlight.io
Investors · 4
Also in the syndicate · 1
Company profile
researched Aug 2026Sunlight (sunlight.io) is a Cambridge, UK-headquartered edge infrastructure company that develops hyper-converged infrastructure software. Its Sunlight Enterprise Software Platform combines a lightweight virtualization hypervisor called NexVisor, a distributed block storage volume management layer based on Sunlight Integrated Storage technology, and a Sunlight cluster controller that runs as a tenant virtual service on top of one of the NexVisor nodes. The platform is designed to deliver high-performance IO for both networking and storage traffic to and from tenant virtual machines.
The company's commercial offering, Sunlight Edge, is positioned as a secure, zero-touch infrastructure for turning edge data into real-time insight and action at remote locations such as retail stores, factories, wind farms and restaurants. Sunlight works with ruggedized edge hardware, enabling users to consolidate in-location edge applications with isolation, security and high availability. Sunlight is a spin-out of OnApp, and its technology was formerly developed in the OnApp Emerging Technologies lab, with components used in production public cloud systems for over five years.
Founding story
Sunlight originated as a spin-out of cloud software company OnApp, commercializing hyper-converged infrastructure technology developed inside OnApp's Emerging Technologies lab.
Business model
Sunlight licenses and delivers an enterprise software platform for hyper-converged edge infrastructure, offered in a cloud-like Edge-as-a-Service model that runs on ruggedized third-party edge hardware.
Traction
Total funding raised to date reached $20 million as of January 2023. Technology components originating in the OnApp Emerging Technologies lab had been running in production public cloud systems for over five years.
Latest developments
In January 2023 Sunlight closed an undisclosed funding round led by Valedor Partners, Robert Bosch Venture Capital and OpenOcean, bringing total funding to $20 million, and appointed Tom Flink as CEO alongside Founder & CTO Julian Chesterfield. Proceeds were earmarked for US commercial growth and scaling its Edge-as-a-Service platform.
▸Full profile — market position, technology, go-to-market, geography, history
Market position
Sunlight positions its platform as a high-performance hyper-converged infrastructure offering for edge computing, built on technology previously deployed in public cloud environments through OnApp.
Technology
The Sunlight Enterprise Software Platform is a fully hyper-converged infrastructure system built around the NexVisor lightweight hypervisor, a distributed block storage layer derived from Sunlight Integrated Storage, and a cluster controller managing users and roles, virtual server instances, virtual block devices, virtual networks and OS templates. NexVisor nodes are centrally managed by a highly available service named virtxd; each node manages its own network and storage controllers and attached block devices, with storage drives automatically clustered into pools that can be partitioned into datastores with configurable redundancy and capacity. Software-defined networking connects distributed virtual network interfaces into isolated subnets without depending on switch VLAN support.
Go-to-market
Sunlight targets distributed enterprise edge deployments and works with ruggedized edge hardware providers; a January 2023 funding announcement referenced partners including Avnet Integrated and indicated a focus on US commercial expansion.
Enterprises operating applications across distributed remote locations, including retail stores, factories, wind farms and restaurants; the parent technology lineage served MSPs, telcos and hosting providers.
Geography
Headquartered in Cambridge, United Kingdom, with group companies around the world including the United States; a 2023 funding round was aimed at US-focused commercial growth.
History
Sunlight was established as a spin-out of OnApp, a company whose technology powered public clouds for MSPs, telcos and hosting providers; the underlying hyper-converged technology was developed in the OnApp Emerging Technologies lab and components had been in production systems for more than five years. In January 2023 the company announced a funding round bringing total capital raised to $20 million, under Founder & CTO Julian Chesterfield and newly appointed CEO Tom Flink.
Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Timeline · 2
launches, deals, and filingsSunlight raised an undisclosed amount led by Valedor Partners, Robert Bosch Venture Capital and OpenOcean, bringing total funding to date to $20 million. The funds were earmarked for US-focused commercial growth and scaling its Edge-as-a-Service infrastructure platform.
Sunlight was reported as led by Founder & CTO Julian Chesterfield and new CEO Tom Flink, who previously held executive roles at Citrix Systems, RES Software, Forcepoint and Instart Logic.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 8
primary sources listed
- Sunlight Enterprise Platformdocs.sunlight.io · web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Sunlight do?
- Cambridge, UK edge infrastructure company offering hyper-converged, Edge-as-a-Service software for distributed sites.
- Who are Sunlight's investors?
- Sunlight's investors include Bosch Ventures, OpenOcean, Robert Bosch Venture Capital.