Matrix 1.0 - Decentralized Messaging Protocol Release

The main innovation (and a prerequisite for use) of the Synapse 1.0 server - the implementation of the Matrix 1.0 protocol - is the use of a TLS certificate (a free Let's Encrypt is also suitable) for the server domain, which provides secure data transfer between servers participating in the federated network. Therefore, if you use a self-signed certificate for your home server - you must create a valid certificate - otherwise your server will stop interacting with other servers on the network.
Matrix 1.0 protocol release plans were announced in Brussels in February 2019 at the largest FOSDAM 2019 Open Source conference as part of the implementation of the Matrix.org Foundation technologies to provide the communications infrastructure of the French government.
Interestingly, two months ago, the matrix.org server was subjected to a hacker attack, as a result of which it was necessary to recreate the matrix.org server database (with the loss of encrypted chat history stored on the servers) - as well as to re-launch the Riot application for Android - due to a key leak and passwords. Hackers left recommendations on improving business processes and server security (related to vulnerabilities in Jenkins, a software development and testing automation platform). Matrix “home” servers were not affected, with the exception of temporary unavailability of “stickers” for user messages and other secondary services.
The most popular client Riot.im (current version 1.2.1) - available both in the desktop implementation and on most mobile platforms - has come close to similar clients for Slack and Telegram in terms of convenience and reliability.

As I already wrote , Synapse servers are rather undemanding to hardware - you can use ODROID-XU4 ARM microcomputers for $ 49 for a “home” server, and due to the appearance of virtual machines based on ARM Graviton processors in Amazon Cloud at the end of last year, inexpensively set up a backup of a “home mini data center” in the Amazon cloud.
News and additional information - matrix.org