In case you missed it, there's a non-technical explanation of federation/decentralisation on switching.social:
It's aimed at people who have no prior knowledge. If you know someone who is confused by how a decentralised platform works (for example Mastodon compared to Twitter), you might want to send them this link.
@switchingsocial I have had success when comparing it with email.
Yes, that's a really great one, and you get the analogy of different domain name addresses too.
mastodon.at is open to all users and federates with most instances.
🇩🇪 🇦🇹 🇨🇭 mastodon.at ist offen für alle User und ist mit vielen anderen Instanzen verbunden.