Railway raises $100 million Series B to build AI-optimized cloud platform with custom data centers

Railway, a San Francisco-based cloud infrastructure platform, announced a $100 million Series B funding round to expand its operations and data center footprint. The round was led by TQ Ventures and included participation from FPV Ventures, Redpoint, and Unusual Ventures, valuing the company as a significant infrastructure player emerging during the AI expansion cycle.

The company operates at scale despite minimal marketing investment. Railway claims to have amassed two million developers, processes over 10 million deployments monthly, and handles more than one trillion requests through its edge network. The platform generated tens of millions in annual revenue with 3.5x growth last year and a monthly growth rate of 15 percent, while maintaining a team of just 30 employees.

Railway distinguishes itself through infrastructure design optimized for rapid iteration cycles. The platform claims to deliver deployments in under one second, addressing what founder and CEO Jake Cooper describes as a critical bottleneck created by AI coding assistants. The company operates its own data centers rather than building on top of cloud providers, a decision made in 2024 to achieve tighter control over network, compute, and storage layers.

Customers report measurable improvements. Daniel Lobaton, chief technology officer at G2X, a federal contractor platform, documented infrastructure bill reductions from $15,000 to approximately $1,000 monthly after migration, alongside seven times faster deployment speeds and an 87 percent cost reduction. Railway's per-second pricing model—$0.00000386 per gigabyte-second of memory, $0.00000772 per vCPU-second, and $0.00000006 per gigabyte-second of storage—contrasts with traditional cloud models where customers pay for provisioned capacity regardless of utilization.

Railway has achieved significant Fortune 500 penetration despite its small sales footprint. The company claims 31 percent of Fortune 500 companies use the platform, though often for individual team projects rather than company-wide deployments. Notable users include Bilt, Intuit's GoCo subsidiary, TripAdvisor's Cruise Critic, and MGM Resorts.

The platform has integrated with AI systems. Railway released a Model Context Protocol server in August 2025 enabling AI coding agents to deploy applications and manage infrastructure directly from code editors. Cooper characterizes this integration as creating loops where Claude and similar systems can call deployments and analyze infrastructure automatically.

Railway's expansion strategy focuses on global data center growth, team scaling beyond 30 employees, and establishing a formal go-to-market operation. The company had hired its first salesperson only in 2024 and employs just two solutions engineers, having relied entirely on word-of-mouth adoption for its first five years. Cooper indicated the funding was strategic rather than necessary, describing the company as 'default alive' with sufficient revenue to sustain operations.