The text discusses a structured approach to architecting Pulumi applications for deploying infrastructure on AWS, using a layered methodology by splitting resources into separate Virtual Private Clouds (VPCs) for application and database components. It illustrates how to use Pulumi, an infrastructure as code tool, with TypeScript to manage AWS resources such as AWS Fargate, Application Load Balancer (ALB), and RDS instances by organizing them into separate projects corresponding to networking, database, and application layers. This setup utilizes Pulumi's ComponentResource class to create reusable infrastructure components, and employs Stack References to enable communication between different layers, ensuring secure and efficient infrastructure management. The guide includes practical examples of setting up networking, database, and application projects, demonstrating how Pulumi automates resource creation and manages dependencies across projects, while encouraging best practices in infrastructure design and collaboration.