I find sad that even if I think about making outline for some service that able to federate with ActivityPub / Fediverse, it also means I have to think about something that can be deplatformed, outlawed or censored out in 2025.
But both ActivityPub (and even ATProto) is NOT designed to be functional in such conditions.
Attempt to support it makes immediately you dependent on pyramid of:
馃捇 servers, likely cloud
馃摐 DNS
馃攽 SSL certificate(s)
Each of above can become point of failure 馃У