[bobinux]

.NET Standard is a standard like JDK version, which can be JDK 8, JDK 9 and so on... .NET Core is an implementation like OpenJDK, Oracle JDK If you write something for JDK 8 standard, like using the Java Time API, you expect it to work with either Oracle JDK 9 or OpenJDK 9 In .NET, the standard version, means that up to specific version of .NET Framework or .NET Core or any other implementation like Mono can execute the software. I don't see any real fragmentation here, one is solely for people that are ok with Windows and the other one is meant for people that are not okay with Windows (ofc the .NET Core is meant for more than just this). The same with Java, OracleJDK is meant for people that are ok with Oracle and OpenJDK for people that are not okay with Oracle. What fragmentation? There are but a few implementations and each of them have a clear use cases. It's not like choosing a JavaScript framework or a tool, now that ecosystem is a true fragmentation... And who knows, maybe with some time, the .NET Core will evolve to the point, where it will be the only .NET implementation