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If you’re savvy with running a Linux server, this is a pretty good choice. The advantages are having complete control over your hosting setup and generally having the cheapest storage available, and a lower overall cost per site, if you run multiple sites. The main disadvantage is having to be your own sysadmin.
A virtual private server gives you complete control over a virtual slice of hardware. Typically this provides better fault tolerance, easier migration, and simpler server management, with the downside of being slightly lower in performance (in ways which don’t matter for hosting websites most of the time).
Some known providers:
Colocation, either with managed hardware or with bring-your-own device. Not for the faint of heart. Generally gives you more performance but worse bang for your buck, worse fault-tolerance, and much more of a management headache when things go wrong.
Cloud app hosting means you provide an image for an application which gets run only when it’s actively being used.
The advantages are that there’s a lot less administrative overhead on your end, and it’s usually easier to deploy your site and also handle scaling and so on.
The disadvantages are numerous, however; usually there’s a much lower limit on how much content you can host within the container (and Publ is not designed to use content kept in an external object store), deployments can be significantly slower, and when the site “sleeps” it can take quite some time for it to serve the first page while it wakes up. Also, storage, CPU, and bandwidth tend to be much more expensive than dedicated hosting.
Some known providers:
Typically this gives you the advantages of self-hosting (cheap storage and bandwidth) and cloud app hosting (managed hosting, no self-administration), with the disadvantages of having to share capacity with other users and not necessarily having the ability to choose your actual service stack.
Most shared hosting providers don’t allow running Python apps, but all of the following do:
Note that “supporting Python” doesn’t necessarily mean supporting Python apps, as sometimes it just means being able to run Python CGI (which is a different, older mechanism). If a provider says they can host WSGI, Flask, or Django, and that they support Python 3, they can probably host Publ.