The term “Microsoft stack developer” generally refers to a software developer who is proficient in a range of Microsoft technologies and tools that are commonly used together in building applications. These technologies usually include, but are not limited to:

1. .NET Framework/Core: A software framework for building applications on Windows.

2. C#: The programming language commonly used for .NET development.

3. ASP.NET: A framework for building web applications.

4. SQL Server: Microsoft’s relational database management system.

5. Azure: Microsoft’s cloud computing platform and services.

6. Visual Studio: Integrated Development Environment (IDE) for developing, debugging, and deploying applications.

7. PowerShell: Task automation and scripting language.

8. Web APIs: Microsoft also offers various APIs for adding functionalities like machine learning, analytics, etc.

9. Windows Server: For setting up and managing servers, often used in conjunction with IIS (Internet Information Services).

10. Entity Framework: An Object-Relational Mapping (ORM) framework.

11. WPF/WinForms: For desktop application development.

Being a Microsoft stack developer means you should be comfortable working with most or all of these technologies and be able to integrate them to deliver complete solutions. These skills are in high demand, especially for enterprise-level applications.