Azure Bicep is a Domain-Specific Language (DSL) that uses a declarative syntax to deploy Azure resources. It's the successor to the messy ARM JSON templates.
- **Readability:** It looks like clean code, not a data structure.
- **Modularity:** You can easily create 'Modules' for common resources (e.g., a 'Standard VNet module') and reuse them across projects.
- **IntelliSense:** First-class support in VS Code with full validation before you ever hit 'Deploy'.
Bicep is just a 'Skin' on top of ARM. When you deploy a Bicep file, it's compiled to ARM JSON on the fly and sent to Azure. This means any new Azure feature is available in Bicep on Day 0. No waiting for provider updates.
Q: "Bicep or Terraform?"
Architect Answer: "If you are 100% Azure, use **Bicep**. It has better state management (Azure handles it), zero Day-0 delay for new features, and the syntax is much tighter. Only use **Terraform** if you are building a truly multi-cloud platform where you need to manage AWS and Azure resources in the same file."