Monitoring your web infrastructure is key for several reasons. It enables you to gain insights into the performance and health of your resources, identify potential issues, and make informed decisions for optimization. AWS offers a comprehensive monitoring solution through Amazon CloudWatch, which provides built-in metrics and the flexibility to create custom metrics. However, while comprehensive, the free monitoring options available still might not always meet your needs, and upgrading to the next level of configuration might be overkill and drive up your hosting costs. Auditing and customizing your CloudWatch infrastructure is a great way to get the metrics you desire and save money along the way.