Only deployments of Inertia I have are internal code I can't readily share, but all it does is replace the very typical pattern of passing json-encoded props to a a blade template that contains a single React/Vue/Svelte component. Now you just return Inertia::render('My/Component', $arr) from your controller or route handler function, and you're good to go.

It also has various magic for router links that do partial refreshes and working with classic (non-json) forms and whatnot. I use none of those, I'm all about json and useFetch() instead, and Inertia's pretty good about getting out of your way when you don't need it. It lets you write as much or as little in SPA style as you want, it's more or less your favorite JS framework as a view layer directly without having to interpose another view as a middleman (the middleman is there, but it's all implicit: you add the @inertia directive inside your <div id="app">, and that's it)

I'm familiar with API Platform, it's the bees knees. Documentation could be better though.