New to Wappler/hosting and have some questions

I’ve only ever used things like WordPress before and am trying to figure out how Wappler and hosting in general works. Lots of terms and services I want to make sure I have correct.

First off, Docker is just like a fancy FTP correct? It’s used to upload your site to your host. And is the free version fine or would I need to upgrade? Not exactly sure what image pulls, and concurrent builds are.

Second, the Google Firebase hosting, you cannot use server-side languages, does that mean you cannot use a database? Similarly, would you be able to still have a dynamic site by using JSON for example? And is this how it works for basic shared hosting as well? For example, I have shared hosting with Site Ground and it says they don’t support node.js. So, I couldn’t use a database and such, but a basic site made in Wappler would work on there?

Third, is there a big difference between managed hosting or a VM? On Digital Ocean they are very similar prices. I know managed is easier for newcomers, but would I be missing out on anything if I didn’t get the VM?

I’m also a bit confused on databases. Using Digital Ocean for example, do you have a database when you buy a Droplet or App Platform, or do you need to still get one? I see the option to pay 15$ for a managed database but I don’t know if that means I don’t have one if I don’t get that, or if it is just an upgrade.

I’m also confused on S3. Does it do something that my host and/or database can’t do?

Thats all the questions I can think of right now, any help or links to relevant resources would be appreciated.

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