how to use apis inside nuxt explanation code example

Example: nuxt does asyncData appear on the front end

As you've mentioned Nuxt will first fulfil any asynchronous call
you put into asyncData. Once this is done it'll start to
render your view, render in this context means it'll simply
replace your component tree on the first view with html. All of
this happens on your server,
the user wont even see any of this.