
How NatWest Bank reduced costs, met sustainability goals, and scaled AI responsibly with Trustwise Harmony AI..
NatWest Bank partnered with Trustwise to balance ambitious AI sustainability goals with cost efficiency, transforming risk into competitive advantage. Rising LLM expenses, strict regulatory standards, and the need for energy-efficient infrastructure created significant challenges for the bank’s 75+ data scientists and developers. Compliance with ISO/IEC 21031:2024 SCI standards and transparent AI reporting added further pressure to scale responsibly while optimizing total cost of ownership.
Trustwise deployed Harmony AI in a proof-of-concept that reduced latency, cut operational costs, and delivered measurable carbon reductions aligned with Green Software Foundation’s SCI standards. Unlike traditional approaches, Trustwise trust management system embeds “Trust as Code” into every decision, ensuring security and sustainability in real time. The results gave NatWest confidence to scale innovation responsibly across business units.