Add migration overview from multi-container Web Apps to AKS

This document provides an overview of migrating from multi-container Web Apps to Azure Kubernetes Service (AKS), including references and component roles.

Author: brown9804

0_Azure/8_AzureApps/demos/1_fromMulti-containerWebApp_toAKS.md

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+# Migrating from multi-container Web Apps to AKS (Azure Kubernetes Service) - Overview 
+
+Costa Rica
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+[brown9804](https://github.com/brown9804)
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+Last updated: 2025-09-05
+
+----------
+
+<details>
+<summary><b>List of References</b> (Click to expand)</summary>
+
+</details>
+
+| Component | Role | 
+| --- | --- | 
+| Containers | Lightweight, `portable units that package code, dependencies, and runtime together`. | 
+| Docker | Tool that `builds and runs these containers locally`. It lets you define`multi-container setups using docker-compose.` |
+| Docker Compose | Manages multiple containers on one host |
+| Kubernetes (K8s) | Orchestrates containers across many hosts (nodes) | 
+| AKS | Azure’s managed Kubernetes `handles infrastructure, scaling, and updates for you` | 
+
+> [!NOTE]
+> If you have any questions or need further clarification, please reach out to your Microsoft account team or contact Microsoft directly: [Microsoft Sales and Support](https://support.microsoft.com/contactus?ContactUsExperienceEntryPointAssetId=S.HP.SMC-HOME) for additional support and guidance, or
+
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