Is React Server-Rendering Great Benefits?

Question

JavaScript

What gives in fact the server rendering of react, if you take an online store with goods and a shopping cart.
Or just PHP + React?

Answer 1

It makes it possible not to duplicate code if you need to give search engines content that is rendered through react. If you only have a basket on react, then you don't need it, if the whole store - then it's desirable if you want to be indexed.