.NET is a free and open-source managed computer software framework for Windows, Linux, and macOS operating systems. .NET Core is the Future of .NET.
Microservices are modular, small and independently deployable services that allow programmers to architecturally isolate each service, and thus create integrated applications in which pieces of code can be separately administrated, tested and enhanced.
Docker containers simplify deployment and testing by bundling a service and its dependencies into a single unit, which then runs in an isolated environment.
With .NET we can create and deploy microservices that implement all the current best practices, including Docker, containers and "Visual Studio for containers".