# Fleets and Stacks in Fleet Type in Amazon WorkSpaces Applications
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With Amazon WorkSpaces Applications, you create fleet instances and stacks as part of the process of streaming applications. A fleet consists of streaming instances that run the image that you specify. A stack consists of an associated fleet, user access policies, and storage configurations.

**Topics**
+ [Session Context](managing-stacks-fleets-session-context.md)
+ [Fleet Types](fleet-type.md)
+ [Instance Families](instance-types.md)
+ [Create a Fleet and Stack](set-up-stacks-fleets.md)
+ [Customize a Fleet](customize-fleets.md)
+ [Update a Fleet](update-fleets-new-image.md)
+ [Fleet Auto Scaling](autoscaling.md)
+ [Multi-Session Recommendations](multi-session-recs.md)