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# Single Server Deployments
Druid includes a set of reference configurations and launch scripts for single-machine deployments:
-`micro-quickstart`
-`small`
-`medium`
-`large`
-`xlarge`
The `micro-quickstart` is sized for small machines like laptops and is intended for quick evaluation use-cases.
The other configurations are intended for general use single-machine deployments. They are sized for hardware roughly based on Amazon's i3 series of EC2 instances.
The startup scripts for these example configurations run a single ZK instance along with the Druid services. You can choose to deploy ZK separately as well.
The example configurations run the Druid Coordinator and Overlord together in a single process using the optional configuration `druid.coordinator.asOverlord.enabled=true`, described in the [Coordinator configuration documentation](../configuration/index.html#coordinator-operation).
While example configurations are provided for very large single machines, at higher scales we recommend running Druid in a [clustered deployment](../tutorials/cluster.md), for fault-tolerance and reduced resource contention.
