Mastodon is a "federated" social network that works like Twitter. It puts the control of data into the user's hands, not in a single corporation.
Mastodon uses ActivityPub to make sure that each Mastodon instance can reach the others.
ActivityPub is also implemented by other applications such as PeerTube and Plume. This is what makes up the Fediverse: a collection of social networks that function as a single one.
Music used in this video: Intrics Leo by Yan Terrien
This video wouldn't be possible without the work of others. Here are the sources I've used during my research & script writing:
Webber, C. A., Tallon, J., Shepherd, O., Guy, A., & Prodromou, E. (2017). ActivityPub. Tech. rep. https://www. w3. org/TR/activitypub/. Accessed: 8.8. 2017. W3C. Retrieved from https://img.sauf.ca/pictures/2018-04-04/d538860d810120584f5e1dffa7594e58.pdf
Zignani, M., Gaito, S., & Rossi, G. P. (2018). Follow the “Mastodon”: Structure and Evolution of a Decentralized Online Social Network. In Twelfth International AAAI Conference on Web and Social Media. Retrieved from https://www.aaai.org/ocs/index.php/ICWSM/ICWSM18/paper/view/17862/17047
Esguerra, R. (2011). An Introduction to the Federated Social Network. Electronic Frontier Foundation. Retrieved from https://www.eff.org/deeplinks/2011/03/introduction-distributed-social-network
Dormitzer, J. (2018). What is ActivityPub, and how will it change the internet? Retrieved from https://jeremydormitzer.com/blog/what-is-activitypub-and-how-will-it-change-the-internet/
Liu, Q. (2017). What I wish I knew before joining Mastodon. Hackernoon. Retrieved from https://hackernoon.com/what-i-wish-i-knew-before-joining-mastodon-7a17e7f12a2b
Lawson, N. (2017). What is Mastodon and why is it better than Twitter. Retrieved from https://nolanlawson.com/2017/10/23/what-is-mastodon-and-why-is-it-better-than-twitter/
Company Info. Facebook. Retrieved from https://newsroom.fb.com/company-info/
Skala, M. (2017). Mastodon WTF timeline. Retrieved from https://ansuz.sooke.bc.ca/entry/335
Number of monthly active Facebook users worldwide. (2019). Statista. Retrieved from https://www.statista.com/statistics/264810/number-of-monthly-active-facebook-users-worldwide/
Fediverse. Wikipedia. Retrieved from https://en.wikipedia.org/wiki/Fediverse
Mastodon (software). Wikipedia. Retrieved from https://en.wikipedia.org/wiki/Mastodon_(software)
Mastodon instances. Wikipedia. Retrieved from https://mnm.social/instances/