the company develops a new CRM system, and the front end uses Vue-cli plus elementUI, back-end. Net. At present, it is uncertain whether the back-end can develop RestFul api, but what is certain is that the front-end page of a single-page application will not be nested in the back-end project. It is currently stuck here, so I would like to ask you whether .net can only develop interfaces that return json objects, instead of having to embed the front-end page into the back-end project. At present, we are hesitant to continue with this project. Please answer your questions