The article is titled “Building software to last forever”, but the software is probably the least interesting part of making it endure (though it’s still important, for the reasons outlined in the article). Making the service last, that’s the tougher part.

For my part, I move ever more determinedly in the direction of self-hosting and actively avoiding becoming a single entity that can fail and take lots of people down with me—avoiding most of the scope of this article becoming applicable.