Imagine if everyone offering said API were capricious, inhumane, and uncaring about customer support, service terminations, and customer wind-down processes.
Now that you’ve pictured AWS, GCP, DigitalOcean, et al. more fully, that rules them out as available options for a long-term fanfic-centric erotica archive site that has specific and unusual legal concerns and threats to its existence incompatible with skittish Redbox-style compute providers.
Was there a particular cloud provider you were thinking of, that is not a ‘good night, sleep well, perhaps we’ll kill you in the morning’ service provider incompatible with AO3?