# Scheduled Scaling

To satisfy demands that change regularly, you can configure a scheduled or periodic policy to scale resources at specified time or periodically. For details about how to create a scheduled or periodic policy, see Creating an AS Policy.

Take an online course selection web application as an example. This application is frequently used when a semester starts and seldom used during other parts of the year. You can configure two scheduled policies to scale resources at the beginning of each semester. The first policy is used to add an instance when the course selection starts, and the second policy is used to remove an instance when the course selection ends.

Parent topic: Scaling Action