iframe was great because we controlled our page context to style things
easily, handle assets easily.
But since it's not on the same domain as the services consuming it, it
implied configuration here and there. Also some behaviors were annoying
to implement (for example, keyboard navigation). I'm sure everything we
do is possible via iframe but I feel like I'll go from barrier to
barrier at every new thing we want to do…
I feel like, at the cost of handling style-conflicts, just rendering
everything in the real page context is more future-proof.
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