Element Server Suite (ESS) is a professional backend for Matrix-based communications that supports self-hosted and fully managed deployments.
It provides enterprise-grade functionality such as advanced identity and access management, auditing and moderation to ensure complete admin control over large Matrix-based deployments. ESS supports all Matrix frontends, and can operate open, secured or air-gapped networks in public or private federations with other Matrix servers. ESS is available on a subscription basis.