Finout has been granted a patent for Virtual Tag Based Resource Reallocation — discover how Co-Founder & CTO Yizhar Gilboa applied high-frequency trading algorithms to solve one of cloud cost management's biggest engineering challenges.

Finout is a financial technology (fintech) company focused on providing innovative solutions for personal finance management, budgeting, and investment tracking. Through their blog, Finout shares tips, guides, and insights on financial planning, wealth management, and investment strategies. Readers can learn about budgeting techniques, investment principles, and ways to optimize their financial health and achieve their long-term financial goals.

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Finout's Co-Founder & CTO explains how the company patented a cloud cost allocation method inspired by high-frequency trading algorithms. The core innovation adapts the ASOF JOIN operation — used in financial markets to match time-series data by proximity — to match cloud billing records against telemetry signals. This reduces computational complexity from O(M×N) to O(M×log(N)), avoiding the expensive Cartesian product approach common in the industry. An additional processing layer handles large 'whale' resource records by splitting them proportionally before matching. The result is dynamically generated Virtual Tag Reallocations that integrate with existing FinOps tooling for budgeting and anomaly detection.

From Wall Street to FinOps: How High-Frequency Trading Math Solved Cloud Cost Allocation