Update DeploymentGuide.md

Updated content and maintained consistency.

Author: Thanusree-Microsoft

docs/DeploymentGuide.md

@@ -31,6 +31,34 @@ Check the [Azure Products by Region](https://azure.microsoft.com/en-us/explore/g
 
 ## Deployment Options & Steps
 
+### Sandbox or WAF Aligned Deployment Options
+
+The [`infra`](../infra) folder contains the [`main.bicep`](../infra/main.bicep) Bicep script, which defines all Azure infrastructure components for this solution.
+
+When running `azd up`, you’ll now be prompted to choose between a **WAF-aligned configuration** and a **sandbox configuration** using a simple selection:
+
+- A **sandbox environment** — ideal for development and proof-of-concept scenarios, with minimal security and cost controls for rapid iteration.
+
+- A **production deployments environment**, which applies a [Well-Architected Framework (WAF) aligned](https://learn.microsoft.com/en-us/azure/well-architected/) configuration. This option enables additional Azure best practices for reliability, security, cost optimization, operational excellence, and performance efficiency, such as:
+  - Enhanced network security (e.g., Network protection with private endpoints)
+  - Stricter access controls and managed identities
+  - Logging, monitoring, and diagnostics enabled by default
+  - Resource tagging and cost management recommendations
+
+**How to choose your deployment configuration:**
+
+When prompted during `azd up`:
+
+![useWAFAlignedArchitecture](images/macae_waf_prompt.png)
+
+- Select **`true`** to deploy a **WAF-aligned, production-ready environment**  
+- Select **`false`** to deploy a **lightweight sandbox/dev environment**
+- 
+> [!TIP]
+> Always review and adjust parameter values (such as region, capacity, security settings and log analytics workspace configuration) to match your organization’s requirements before deploying. For production, ensure you have sufficient quota and follow the principle of least privilege for all identities and role assignments.
+
+### Deployment Steps 
+
 Pick from the options below to see step-by-step instructions for: GitHub Codespaces, VS Code Dev Containers, Local Environments, and Bicep deployments.
 
 | [![Open in GitHub Codespaces](https://github.com/codespaces/badge.svg)](https://codespaces.new/microsoft/Modernize-your-Code-Solution-Accelerator) | [![Open in Dev Containers](https://img.shields.io/static/v1?style=for-the-badge&label=Dev%20Containers&message=Open&color=blue&logo=visualstudiocode)](https://vscode.dev/redirect?url=vscode://ms-vscode-remote.remote-containers/cloneInVolume?url=https://github.com/microsoft/Modernize-your-Code-Solution-Accelerator) |