.NET Core is an open-source development platform that supports multiple operating systems. As such, a COBOL application that has been published for use with .NET Core can be deployed to any operating system that .NET Core supports.
The information in this section of the documentation describes how to deploy and run a COBOL application that has already been developed and published to target .NET Core. To develop and publish a COBOL application for .NET Core you must use Enterprise Developer with Visual Studio 2017 version 15.9 or later. See Introduction to Developing COBOL Applications for .NET Core for more information.