How do you organize the work of the front-end with the back-end?

Question

PHP

I do layout and scripting.
Now my layout is tied up and templatized by XSLT and this is done by the backender. It's long and inconvenient.
There is a need to isolate the back and front as much as possible.
So far, no replacement has been found.
How do you do it?
Maybe you can suggest articles or ready-made solutions?

Answer 1

Recently, in my projects, the backend is separated from the frontend. The backend is pure REST. On the SPA frontend.

Answer 2

front on Ember, back asp.net api