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Rooms, presence, and permissions for everything live.

DELIVER / Fusion Session Server Fusion Session Server is the shared room service behind Engage Connect and Fusion XPN. It keeps who is in a room, who may join, what each person may do, and who is present, for meetings, live experiences, and multiplayer games. It is written in C++.
Product overviewAll products

How it connects

Portfolio advantageOne room authority serves every live product. Engage Connect’s meetings and Fusion XPN’s experiences ask Fusion Session Server who is in the room and what they may do, while separately supervised workers carry the media and run the games, so a room outlives a worker that fails.
Diagram, not a screenshot: Engage Connect, Fusion XPN, and multiplayer games use Fusion Session Server, whose parts are rooms and admission, roles and moderation, presence and reconnect, permission rules, room events, and multiplayer lobbies, and which directs media workers, game workers, and Fusion Media Server

What Fusion Session Server brings together.

WHAT IT ENABLES The service that keeps a room’s membership and rules, whatever happens inside the room. Fusion Session Server is in development and runs as a local test server today; media and game workers are not connected to it yet. The image is a diagram, not a screenshot.

Rooms and admission

01 · IN DEVELOPMENTCreate rooms, invite people, approve who joins, and set how many may be in a room.

Roles and moderation

02 · IN DEVELOPMENTRoles decide what each person may do, with transfer of ownership, removal, and bans.

Presence across devices

03 · IN DEVELOPMENTSee who is present and on which devices, and reconnect after a dropped connection without joining again.

Permission rules

04 · IN DEVELOPMENTRules set for a room and narrowed for each person decide what that person may do.

Room events

05 · IN DEVELOPMENTEach participant receives the room’s events that they are allowed to see.

Multiplayer lobbies

06 · IN DEVELOPMENTShared lobbies with player slots, teams, readiness, spectators, and reconnecting players, with separate game workers running the matches.

Media permissions

07 · PLANNEDTime-limited grants tell Fusion Media Server whose audio, video, and screen may be sent, and are withdrawn when a role changes.

Recording and broadcast control

08 · PLANNEDStart and stop recording and broadcasting from the room, under its rules.

Sign-in and installation

09 · PLANNEDSign-in with an organization’s accounts, encrypted connections, an installer, and backup.

One product experience. A platform underneath.

THE SHARED FOUNDATION

Fusion Session Server

FOCUSED PRODUCT EXPERIENCE

Shared capabilities

IDENTITY · PERMISSIONS · PRESENCE · MEDIA · SECURITY

Fusion runtime

Solerra · FSML · FSS · CAPABILITY ABI · PROVIDERS

Infrastructure

WINDOWS · FUSION OS · LOCAL · CONNECTED SERVICES

Explore Fusion Session Server.

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Fusion Software LLC · 2026Fusion Session Server