Conversation

This is simple and clear, very nice explainer!

You can make some substitutions here, using any corporate/commercial monolithic site for “Twitter” and pointing out that “Mastodon” is not the network or the Fediverse, just one of many interconnecting applications available. Depends on how complicated you want to get or where your contact has their base of familiarity.

https://mattbrown.dev/mastodon/