# Amazon WorkSpaces Cost Optimizer

**Cost Optimizer for Amazon WorkSpaces** monitors the usage duration of a WorkSpace throughout the calendar month and automatically adjusts the WorkSpace's state to the most cost-effective billing option. While this is not a mandatory requirement, we strongly recommend installing and initially configuring it in **"Dry Run" mode**, which lists recommendations and actions without executing them.

This AWS service enables automatic switching of WorkSpaces between **Hourly (AUTO\_STOP)** and **Monthly Cost (ALWAYS\_ON)** modes on a monthly basis, ensuring optimized costs. In **"Dry Run" mode**, recommendations will be displayed in the WorkSpaces Manager Portal, but the suggested changes will not be applied.

For more details and deployment instructions, please refer to the link below:\
<https://aws.amazon.com/solutions/implementations/cost-optimizer-for-amazon-workspaces/>

{% hint style="warning" %}
Please ensure that you are in the correct region before deployment of Cost Optimizer.
{% endhint %}

{% hint style="info" %}
After deploying the **WorkSpaces Cost Optimizer**, two **S3 buckets** will be created:

1. **One bucket for logs** → This bucket includes `"logs"` in its name and is used for storing logs related to WorkSpaces usage and optimizations.
2. **One bucket for Cost Optimiser data** → This is the bucket **without "logs" in its name** and should be used to configure the **WorkSpaces Manager Configuration section**.
   {% endhint %}

In AWS, when deploying network configurations, there are typically two deployment templates based on the **existing network configuration** of the **VPC**, for which we have a different CloudFormation template:

* [Hub Template](https://docs.aws.amazon.com/solutions/latest/cost-optimizer-for-workspaces/launch-the-stack-hub-template.html)**:** A centralized network architecture where multiple spoke VPCs connect to a single central VPC (Hub).
* [Spoke Template](https://docs.aws.amazon.com/solutions/latest/cost-optimizer-for-workspaces/launch-the-spoke-stack.html): A peripheral VPC that connects to the Hub via a Transit Gateway or VPC Peering.


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