# Maintenance Window
<a name="og-maintenance-window"></a>

You will want to create a maintenance window that considers different application needs, different AWS Regions, and different stress periods. Your maintenance window is when AMS will apply patching. Here are some guidelines:
+ To limit the impact on users, plan your maintenance window according to the AWS Region where your environments are deployed.
+ Schedule a window outside of regular business hours and when the least traffic is expected on production servers.
+ Typically, infrastructure stacks require monthly updates.
+ Schedule a maintenance window for at least 300 minutes. Operating system patching takes 60-90 minutes, infrastructure stack patching takes 180-300 minutes.