When do you need to maximize the portability of web application logic to the frontend?

Question

Web development

In what cases is it necessary to maximize the portability of the web application logic to the frontend? Just considering the current Internet speeds, in my opinion it is easier to entrust the client with redundant data, and he will process everything as it should. And I see here only one minus is the code and data leakage.

Answer 1

Always, I think. To load the client as much as possible, the server is one for all, it may not be able to cope.

Answer 2

Agree with previous answer. Removing adequately the maximum amount of logic to the front (not to the detriment of security, of course) - will unload the server, save it from primitive and unnecessary actions. Its task is Logic, Data, and everything that the client needs to see - let it be done on the client side.