Ada/GNAT/AWS-friendly web hosting

Researching how to build an HTTP server (serving a website) on a local machine (MacOS) using AWS (Ada Web Server) and deploy it on a web hosting provider (e.g. 1dollar-webhosting.com).
Anyone done that? I've searched but could not find.
Thanks.
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Some specific questions on my mind follow.
Is a MacOS host required (e.g. Ultahost 15 euros/month; I'd rather stay with 1dollar)?
If the host runs on Linux then cross-building (from MacOS to Linux) required, right? GNAT does that, right?
Or, must the program be built in the host? (Thus requiring GNAT be there.)
The host is already running an HTTP server program (probably Apache). Must it be turned off? How?
In general, can the executable be launched on a VPS (Virtual Private Server)? Which port?
Will dynamic linking work? I'm guessing not, so, static; but then, will GNAT integrate the right libraries for Linux in the executable?
Will "Community GNAT" do? (Instead of GNAT Pro.)
Are those the right questions?
Thanks, thanks, thanks, thanks, thanks, thanks and thanks.