Source: https://gameye.com/glossary/serverless-game-server/ --- title: "Serverless Game Server | Gameye" description: "A serverless game server spins up on demand and terminates when the session ends — pay only for active play time, with no idle servers sitting unused." --- # Serverless Game Server A serverless game server is a dedicated server session that spins up on demand when players need it and is terminated when the session ends — you pay only for active play time, with no idle servers sitting unused. The term borrows from cloud computing, where “serverless” means you write code and the platform handles provisioning — you never think about the underlying machine. Applied to game servers, it means a studio calls an API when players are matched, receives an IP and port, and the platform handles everything else: which machine runs the session, in which region, using which hardware. When the match ends, the session is torn down and you stop being charged. ## What it solves Traditional game server hosting required studios to reserve capacity in advance. You’d rent a block of servers for a month, hope your player estimates were accurate, and pay for every idle hour when servers sat empty between matches. Underestimate and you turn players away; overestimate and you burn budget on machines doing nothing. Serverless game server hosting removes that bet. The platform maintains a global pool of capacity that many studios share. When your players need sessions, capacity is drawn from the pool. When they don’t, you’re not holding any — someone else’s players are using it. Your cost tracks your actual playtime rather than your worst-case estimate. ## ”Serverless” doesn’t mean there are no servers This is a common point of confusion. Serverless game hosting still runs your game on a real dedicated server — a physical or virtual machine with CPU, RAM, and network. The “serverless” part means **you** don’t manage or reserve those machines. The platform does. Your game server binary still needs to be compiled, containerised, and pushed to a registry. Dedicated, authoritative server architecture still applies. The difference is purely in how infrastructure is provisioned and billed. ## The cold-start tradeoff Pure on-demand provisioning has a problem: starting a new container from scratch takes 20–60 seconds. Players grouped by a matchmaker can’t wait that long. Good serverless game server platforms solve this by maintaining a **warm buffer** — a small pool of pre-started sessions ready to receive players immediately — while still billing only from the moment a session is allocated, not from when the buffer was populated. This warm buffer is the engineering challenge that distinguishes capable orchestration platforms from simple container-on-demand services. Gameye’s Smarthost feature is designed specifically to predict demand and maintain the right buffer size — enough to eliminate cold starts, not so large that idle sessions inflate your bill. ## How billing works in practice Serverless game server billing is typically calculated per second or per minute of active session time. A 20-minute match on a 2-vCPU, 4GB instance at $0.05/hour costs roughly $0.017. Scale that to 10,000 concurrent sessions and the numbers are significant — but you’re paying for 10,000 active matches, not 10,000 reserved machines running 24 hours a day regardless of demand. **See also:** [Session hosting](https://gameye.com/glossary/session-hosting/) · [Auto scaling](https://gameye.com/glossary/auto-scaling/) · [Idle machines](https://gameye.com/glossary/idle-machines/) · [Server fleet](https://gameye.com/glossary/server-fleet/) · [Gameye pricing — pay only for active sessions](https://gameye.com/pricing/) Building a multiplayer game? Gameye hosts dedicated game servers: ship your server as a Docker container and start one per match with a single API call, in a region near your players. [See how it works →](https://gameye.com/how-it-works/) [Back to Glossary](https://gameye.com/glossary/) ## Related terms - ### Session hosting Session hosting is when a server, or computer, runs your game’s matches. Each match, with a set group of people, is considered a session. [Read more](https://gameye.com/glossary/session-hosting/) - ### Auto scaling Auto scaling starts new game server instances as player load rises and releases them when demand drops — no manual intervention required. [Read more](https://gameye.com/glossary/auto-scaling/) - ### Idle machines An idle machine is a provisioned server that's powered on and ready but not running a game session — on standby, waiting to be allocated. Idle capacity speeds up player starts but costs money while it waits. [Read more](https://gameye.com/glossary/idle-machines/) - ### Orchestrator An orchestrator automates game server lifecycle — starting sessions on demand, placing them in the optimal region, and shutting them down when matches end. [Read more](https://gameye.com/glossary/orchestrator/) - ### Server Fleet A server fleet is the pool of game server instances — running or on standby — managed by an orchestration platform, scaling up and down with player demand. [Read more](https://gameye.com/glossary/server-fleet/)