Learn how Humanitarian Openstreetmap Team uses modern tools like Terraform, AWS serverless, and other tools to modernise the collaborative mapping tool - Tasking Manager. The talk will focus on balancing infrastructure costs, cloud vendor lock-in, performance and DevOps processes. Tasking Manager is an important collaborative mapping tool that is considered a public good. In recent times, the tool has left a lot to be desired in terms of performance and availability. The HOT Tech team set out to overhaul the architecture, and deployment processes of Tasking Manager. I discuss the soon-to-go-live improvements that touch upon Terraform, AWS Serverless, CircleCI, Observability processes, and Developer Experience.