One VPS is plenty
This blog is static files in a 1.4 MB container on a shared five-euro VPS. The deploy script, not the hardware, is what platforms were selling.
This site is static files behind a 1.4 MB container on a small VPS that also runs four other projects. A five-euro machine serves this traffic without noticing.
People stayed on platforms for the deploy story: what happens when the build breaks, how to roll back, whether the thing you tested is the thing that shipped.
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Those answers fit in a script. Build the exact commit, verify the output, upload the image over SSH, health-check before cutover, keep the previous image for rollback. bun ship runs all of it, and the script is short enough to read before you trust it.