From a user experience its a social media site, like reddit.
And an ELI5 for the technical parts:
- It is decentralized which means that no single company owns the whole thing. Anyone can set up a server.
- it is also federated which means that servers can communicate with each other. I am able to see your post even though my server is programming.dev, your server is floss.social, and you posted on lemmy.ml.
I would use cloudflare pages (or any forge ‘pages’ feature) before using tunnels for a static website