# Configuring an application when working with EMR Serverless
<a name="application-capacity"></a>

With EMR Serverless, configure the applications that you use. For example, set the maximum capacity that an application can scale up to, configure pre-initialized capacity to keep driver and workers ready to respond, and specify a common set of runtime and monitoring configurations at the application level. The following pages describe how to configure applications when you use EMR Serverless.

**Topics**
+ [Understanding application behavior in EMR Serverless](app-behavior.md)
+ [Pre-initialized capacity for working with an application in EMR Serverless](pre-init-capacity.md)
+ [Default application configuration for EMR Serverless](default-configs.md)