Where does the Front End end and the Backend begin?

hi,

what cant u do if u dont code for the backend? Im wanting to do both certifications but it seems there arent many Data Viz challenges.So i am wondering how limited are u if u dont know how to code for the Backend?

cheers

Backend code is usually about building server software or other helpful Node modules. Whether you write a RESTful API that handles your web application’s code, a video game server, or a program that other developers run on their own computers to automatically fix splling erors, your backend code is meant to be run on fewer machines and without having to be downloaded each time. It’s pretty fun.

I’m not certain I understand the nature of your question here. What do the Data Viz challenges have to do with backend coding? What is your concern?