This article will explain to you how you can create an Azure Storage Account, prepare AzCopy locally and how to create a bash script which will be used to copy your local Proxmox Backups via AzCopy to an Azure Storage Account by a cost effective way.
With Gatsby 4 bringing in Server-Side Rendering (SSR) and Deferred Static Generation (DSG) you need an alternative methode to just hosting static files. Each page using SSR or DSG will be rendererd after a user requests it so there has be a server in the background which will handle these requests and build the pages if needed.
With the free tier for AWS you always get one active AWS code pipeline per month and 100 minutes of AWS code build per month with which you can create a CI / CD pipeline for a GatsbyJS site.
With AWS (and in particular the free AWS contingent) you have the option of a static website with a custom domain for a few Hosting cents a month including CDN via CloudFront and CI/CD integration.