When you launch a dedicated server, it sends a heartbeat to Valve's master servers. This packet includes the server's IP, port, and current player count.
The Steamworks API uses a specific query protocol to maintain a real-time list of active game servers.
For standard users wanting to manage or update servers, the official and safe tool provided by Valve is . Official & Safe Alternatives

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When you launch a dedicated server, it sends a heartbeat to Valve's master servers. This packet includes the server's IP, port, and current player count.
The Steamworks API uses a specific query protocol to maintain a real-time list of active game servers.
For standard users wanting to manage or update servers, the official and safe tool provided by Valve is . Official & Safe Alternatives