Dotnet watch is a is a file watcher and development tool that runs a .NET command when a source file changes. It’s extremely useful when compiling, running tests, or for publishing when code changes.
Muhammad Rehan Saeed, a software delveloper and Microsoft MVP, digs into the tool and in his latest blog. It provides some handy hints and tips!
For additional information, this tutorial on the ASP.NET tutorials website covers the basics of developing ASP.NET Core applications using dotnet watch.
Source: rehansaeed.com, Microsoft ASP.NET tutorials