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US cloud firm Lambda raises over $1.5b series E for data centers

Lambda has raised more than US$1.5 billion in a series E round led by TWG Global, a holding company headed by Thomas Tull and Mark Walter.

Lambda, based in San Francisco, provides large-scale AI cloud infrastructure and supercomputing services.

Other participants in the round include the US Innovative Technology Fund and existing investors.

The company said the funding will support the development of gigawatt-scale AI data centers aimed at meeting rising demand from enterprises and research labs.

Lambda was founded in 2012 by machine learning engineers and serves a range of customers, including AI researchers and large tech firms.

The company specializes in building supercomputers for AI training and inference.

🔗 Source: Lambda

🧠 Food for thought

Implications, context, and why it matters.

Lambda’s gigawatt-scale ambition faces a supply chain test

  • Lambda’s funding note does not confirm guaranteed allocations of Nvidia’s newest GPUs, including the GB300 NVL72 rack-scale systems in its Microsoft partnership 1. That silence matters because 2023 shortages created 8–12 month waits for H100 accelerators 2.
  • A $1.5 billion deal would have Nvidia lease 18,000 GPUs from Lambda over four years 3. That would make the chipmaker its largest customer and raise the stakes on securing steady supply 3.
  • Lambda needs agreements that match hyperscalers’ volumes (the largest cloud platforms such as Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP)). Without them, cash may pile up while hardware lags, slowing buildout needed to support its $2.5 billion post-money valuation in Feb 2025 4 and the 70% year-over-year revenue growth it reported for 2024 4.

Multi-cloud AI orchestration vendors can benefit from Lambda’s enterprise drive

  • Lambda’s $425 million revenue with 10,000+ customers 4 creates near-term demand for Financial Operations (FinOps) tools for cloud cost control, plus workload-orchestration platforms that integrate the company’s infrastructure alongside hyperscalers.
  • Teams should plug into Lambda’s 1-Click Clusters 4 (automated cluster setup) and add NVIDIA Scalable Hierarchical Aggregation and Reduction Protocol (SHARP) support 4 for faster multi-node training. Keep Kubernetes (container orchestration) or Slurm (a high-performance computing job scheduler) to schedule jobs across its cloud and AWS, Azure, or GCP without lock-in 4.
  • Timing matters. A planned 2026 IPO 5 and a Microsoft partnership 6 lift Lambda’s standing with enterprises. The window for third-party integrations may shrink if Lambda builds competing orchestration features to protect margins.

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