> - You don't send the user code they don't need yet. If someone is viewing a page that doesn't have a widget, but you send them the code for the widget because

> - You don't send the user code they don't need yet. If someone is viewing a page that doesn't have a widget, but you send them the code for the widget because you've bundled everything the site needs into one JS file, you've wasted the users time and bandwidth. SSR is a very easy way to solve that problem. Just saying: the generated HTML could be a lot larger than the Javascript generating it. Usually it won't be, but it's not a given that sending the HTML is less bandwidth.