SSR VS CSR Authentication

Hi, I am new to web development, so bear with me.

In Appwrite _init, server side Authentication was revealed.
I don't understand the difference between SS login And CS login.
What is the Pros and Cons of each one ? And which method is more secure ?
Difference between having the authentication in a a cookie or in a JWT.
And Which is best for a NextJS App.
Thank you for your response.

First,
In CSR all the auth logic happens on the client side, either mobile or web.
In SSR all the logic happens in the backend.

So, in regular App deployment, there's no difference between the two, just the way you'll need to implement them.

Each one of the login logic has its benefits.

When using CSR you don't need to have **any ** backend and your app will work completely, meaning you'll be able to deploy an app using a mobile device or static file hosting, and Appwrite.
No need for any other infrastructure.

When using SSR you get a huge benefit that you control the login with logic-middlewares and more.
For example, if you want any user with @your-company.com email suffix when using the regular CSR login you won't be able to it, either everyone can register or no one.
But, in SSR you're able to insert any logic in between,

I see, thank you for your swift response! I have followed this example and all works well.

https://appwrite.io/docs/tutorials/nextjs-ssr-auth/step-1

But I wanted to know if there was a more mature tutorial or project, that integrate Server Side Login with middleware and some business-Logic.

Also when should i use cookies and when should i use JSON Web Tokens ?

Check Dennis's one
https://www.youtube.com/watch?v=7LN05c-ov_0&t=2s