# Configuring provisioning timeouts to control capacity in Amazon EMR
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When you use instance fleets, you can configure *provisioning timeouts*. A provisioning timeout instructs Amazon EMR to stop provisioning instance capacity if the cluster exceeds a specified time threshold during cluster launch or cluster scaling operations. The following topics cover how to configure a provisioning timeout for cluster launch and for cluster scale-up operations.

**Topics**
+ [Configure provisioning timeouts for cluster launch in Amazon EMR](emr-provisioning-timeout-launch.md)
+ [Customize a provisioning timeout period for cluster resize in Amazon EMR](emr-provisioning-timeout-resize.md)