Washington Trust Bank, a longstanding financial institution, sought to modernize its software development and infrastructure by adopting Infrastructure as Code (IaC) to enhance security, reliability, and agility in its cloud operations. The bank, transitioning from on-premise systems to Azure, faced challenges in managing its rapidly growing infrastructure while adhering to strict security protocols. Choosing Pulumi over other IaC options like Terraform and Azure Bicep, the bank benefited from Pulumi's versatility, TypeScript support, and seamless integration with GitHub and Azure CLI. Pulumi's automation capabilities allowed Washington Trust Bank to streamline its infrastructure management, improve development speed, and implement security best practices through reusable infrastructure packages and CI/CD pipelines. Additionally, tools like Pulumi CrossGuard and Policy Packs provided robust safeguards, preventing unauthorized or insecure resource deployments and enhancing the overall security of the bank's cloud infrastructure. This modernization effort not only increased developer productivity but also ensured rapid value delivery to customers, aligning with the bank's strategic objectives.