Signal is the world’s most widely used truly private messaging app, and our cryptographic technologies provide extra layers of privacy beyond the Signal app itself. Since launching in 2013, the Signal Protocol—our end-to-end encryption technology—has become the de facto standard for private commu...
Decentralized messaging is comparatively very cheap (at least in the case of XMPP): it doesn’t require nearly as much storage (and what is stored is short-lived considering it’s end-to-end encrypted) nor bandwidth (messages are mere bytes, A/V calls are peer-to-peer most of the time), so we are far from what it takes to self-host mastodon and lemmy (with the expectation that any post can be accessed at any time, and content never expires).