I use AWS S3, DigitalOcean Spaces, Wasabi sys, and more nearly daily for clients and myself. I could write code to just dynamically use one of those here too. But when it comes to posting on Nostr, I am supporting the "local"  #Nostr biz people like  @nostr.build. I believe there are other places who do this as well, but they are the ones I chose to use. This place won't grow if people don't support the devs developing on it. I know from my own experiences here too.