Upwind, a runtime-first cloud security provider, has secured $250m in series B funding as it accelerates global expansion and product development.
The funding round was led by Bessemer Venture Partners, with participation from Salesforce Ventures and Picture Capital. Existing investors taking part include Greylock, Cyberstarts, Leaders Fund, Craft Ventures, TCV, Alta Park, Cerca Partners, Swish Ventures and Penny Jar Capital.
The round brings Upwind’s total funding to $430m and marks the launch of what the company describes as “The Next Wave” of growth.
The company operates in the cloud-native application protection platform (CNAPP) market, which continues to expand as enterprises adopt cloud and AI-driven architectures. Upwind positions itself around a runtime-first security model.
Founded on the belief that cloud security must be built on runtime evidence, Upwind aims to help focus on exploitable risks and maintain development velocity. The company has emerged as one of the fastest-growing independent players in cloud security, challenging legacy vendors amid ongoing industry consolidation, it said.
Since its $100m funding round a year ago, Upwind has reported 900% year-over-year revenue growth and 200% logo growth. Over the same period, the company expanded its workforce from 150 to more than 300 employees and strengthened its presence in the US, UK and Israel, while building momentum across Australia, India, Singapore and Japan.
Upwind now secures millions of workloads for large enterprises including Waste Management, Siemens, Carvana, Roku, ClickUp, Wix, Nubank, Agoda, Peloton, Fiverr and BILL. Customers report a 98% reduction in security alerts and 60% fewer irrelevant CVEs, allowing teams to prioritise risk using runtime context.
The company has also expanded its partner ecosystem, adding more than 100 new partners across ISVs, MSPs and resellers. Strategic partnerships have been launched with NVIDIA, alongside deeper collaborations with hyperscalers such as Microsoft Azure and Amazon Web Services.
With the new capital, Upwind plans to accelerate product development and go-to-market execution, while continuing to invest in customer support and global growth. The company will focus on expanding its platform across data, AI and code, including extending runtime-first security capabilities closer to developers.
Upwind CEO and co-founder Amiram Shachar said, “Cloud infrastructure has changed faster than the security models designed to protect i.
“The next era of cloud security requires a fundamentally different approach, centered in realtime signals. That’s actually the only way to protect the cloud in the new era of AI. We built Upwind for where the cloud is going, not where it has been. This funding round is a small milestone in our journey, but it marks a big day, and it reflects a growing recognition and validates what customers and the market see.”
Bessemer Venture Partners partner Elliott Robinson said, “Cloud security is already one of the largest and fastest growing segments in cybersecurity, and Upwind stood out to us as the right team with the right product in the right time, building for where the market is going.
“Their modern, runtime-first approach, focus on signal over noise, and battle-tested founding team have translated into a company and product that are trusted and loved by security, engineering and platform (DevOps) teams, and used as a true platform. We’re very proud to partner with Upwind as they build the runtime-first cloud security platform for the next generation of enterprises.”
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