Pinpoint utilizes Kubernetes, enhanced by managed services like AWS EKS, to efficiently deploy and scale applications, while leveraging Pulumi to streamline infrastructure management through open-source libraries that integrate with AWS APIs. Pulumi allows Pinpoint to simplify infrastructure-as-code by providing powerful constructs such as for-loops and strong type-checking, which reduce the need for complex scripts and allow for easy updates. To manage costs, Pinpoint employs EC2 spot instances as worker nodes, using Pulumi's AWS library to dynamically set spot prices based on current on-demand rates. Additionally, Pulumi aids in managing third-party services on Kubernetes clusters, offering flexibility with tools like Helm and Kustomize, and allowing for transformations to adjust manifests, such as addressing namespace issues with the Traefik Helm chart. This approach has enhanced Pinpoint's ability to maintain infrastructure and deployment configurations, paving the way for further adoption of Pulumi as the company grows.