It's interesting to see so much nationalism in the context of technological progress at this post... I always thought that people who are interested in progress have a different way of thinking.
in the bio ... "has over twenty years of experience building highly accessible and usable web applications"
why not take the html5 standard (see https://html.spec.whatwg.org/ ) and if needed (dont think so for these use cases... "for clients ranging from energy companies to political parties") htmx or alpinejs ...
Depending on your requirements but you could get a cheap s3 storage or VPS from contabo hosted in Singapore … and then plug it in as kind of a fileserver (or a selfhosted vpn eg headscale