Different goals. Che is focused on workspace portability and interoperability. As a result, there is a hard abstraction between the worksapce and the environme

Different goals. Che is focused on workspace portability and interoperability. As a result, there is a hard abstraction between the worksapce and the environments that power it. the workspace definition includes the definitions of the environments. This makes it possible to move a workspace that is bound to a stack of docker containers containing debugging, runtime, and compilation tools from one node to another node, and then the 2nd node can recreate the entire workspace. Then within this workspace and the machines that are powering it, to embed industry native tools like JDT into it, and then place RESTful wrappers around it so that a browser or other tool may gain access to it. The C9 goal is to build a cloud IDE and provide the best overall experience for developers. And Che was primarily a focus around workspace movement and interoperability.