feat: add MACH Introduction

Azure&MACH/modules/MACH_Introduction/readme.md

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+# [Stage#1](../../../) MACH: Microservices-based, API-first, Cloud-native, and Headless 🚀
+
+## Module Overview 📚
+
+This module introduces students to the MACH architecture, focusing on creating scalable, agile, and modern digital experiences. It covers the principles of Microservices-based architecture, API-first design, Cloud-native technologies, and Headless CMS systems, preparing students to build future-proof web solutions.
+
+## Learning Objectives 🎯
+
+Students will:
+
+- Understand the principles and advantages of Microservices-based architecture.
+- Grasp the significance and implementation of API-first design in web development.
+- Explore Cloud-native technologies and their impact on scalability and resilience.
+- Learn about Headless CMS and its advantages in content management and e-commerce platforms.
+
+## Approximate Module Completion Time ⏱️
+
+- **5 hours**
+
+## Theory 📖
+
+Students are encouraged to explore the following resources:
+
+1. **MACH**
+
+   - [MACH Technology](https://machalliance.org/mach-technology)
+   - [What is MACH architecture?](https://www.sitecore.com/blog/headless/what-is-mach-architecture)
+
+1. **Microservices-based Architecture:**
+
+   - [Microservices on Azure](https://learn.microsoft.com/en-us/azure/architecture/guide/architecture-styles/microservices)
+   - [Microservices: An Overview](https://microservices.io/)
+   - [Introduction to microservices](https://developer.ibm.com/learningpaths/get-started-application-modernization/intro-microservices/introduction/)
+
+1. **API-first Development:**
+
+   - [API-First Development](https://swagger.io/resources/articles/api-first-development/)
+   - [How API-first works?](https://www.postman.com/api-first/)
+
+1. **Cloud-native Technologies:**
+
+   - [cloud-native applications](https://www.redhat.com/en/topics/cloud-native-apps)
+   - [What is Cloud Native?](https://learn.microsoft.com/en-us/dotnet/architecture/cloud-native/definition)
+
+1. **Headless Architecture:**
+   - [What is Headless CMS?](https://www.contentful.com/r/knowledgebase/what-is-headless-cms/)
+
+## Practice 💻
+
+- Complete the "Introduction to MACH Architecture" test in the RS-App > Auto Test.
+
+## Additional Resources 📘
+
+1. [Building Microservices](https://samnewman.io/books/building_microservices/)