# EUCSUS01-BP02 Choose the appropriate running mode for your Amazon WorkSpaces
<a name="eucsus01-bp02"></a>

 The running mode of a WorkSpace determines its immediate availability and how you pay for it (monthly or hourly). You can choose between the following running modes when you create the WorkSpace: 
+  **AlwaysOn:** You are paying a fixed monthly fee for unlimited usage of your WorkSpaces. This mode is best for users who use their WorkSpace full time as their primary desktop. 
+  **AutoStop:** You are paying for your WorkSpaces by the hour. With this mode, your WorkSpaces stop after a specified period of disconnection, and the state of apps and data is saved. 

 **Level of risk exposed if this best practice is not established:** High 

## Implementation guidance
<a name="implementation-guidance-94"></a>

 AutoStop instances are stopped when users disconnect and therefore help lower the carbon footprint associated with WorkSpace instances in comparison to AlwaysOn instances. Below a certain threshold, which depends on the bundle selected, we recommend AutoStop mode. 

 Use [Cost Optimizer for Amazon WorkSpaces](https://aws.amazon.com/solutions/implementations/cost-optimizer-for-amazon-workspaces/) to set the [appropriate running mode](https://docs.aws.amazon.com/workspaces/latest/adminguide/running-mode.html) of a WorkSpaces based on past usage and improve the sustainability position for WorkSpace environments.