Terraform and Bicep are prominent infrastructure-as-code tools, with Terraform being a cloud-agnostic solution and Bicep specifically designed for Microsoft Azure. Bicep simplifies the JSON syntax of ARM templates and offers native Azure integration, while Terraform boasts a rich provider ecosystem and state management features. Understanding their differences can help users choose the right tool for their deployment needs.

The post details how to implement a "build once, deploy everywhere" strategy using Azure Developer CLI (azd) for provisioning environment-specific infrastructure and promoting applications from development to production. It emphasizes using conditional Bicep deployment, environment variable injection, and an automated CI/CD pipeline to ensure consistent deployments across different environments.