Mario Mupo developed foundational Azure infrastructure for the pagopa/dx-playground repository, focusing on secure, private deployments for App Service and Function App in the development environment. Using Terraform and HCL, Mario implemented infrastructure as code practices to enable virtual network integration, disable public access, and standardize resource naming for front-end and back-end services. He integrated Azure API Management resources, applying consistent naming conventions and configuring the function app tier for efficient resource use. By upgrading provider and module versions, Mario ensured the infrastructure remained current and maintainable, resulting in improved API governance and a stronger security posture for the project.