Ace the Google Cloud Certified Associate Engineer Exam 2026 – Skyrocket Your Cloud Skills!

Billing Alerts is the correct answer because it is a tool provided by Google Cloud that allows users to set up notifications and alerts based on their billing and spending. By using Billing Alerts, users can define budget thresholds and receive alerts when their spending exceeds these limits, helping them to manage and control their costs efficiently.

The other options are not directly related to monitoring or controlling spending on Google Cloud. Cloud Functions and App Engine are services used for developing and deploying applications, while Custom monitoring metric is used for collecting, analyzing, and visualizing specific performance metrics for applications or resources, but not for managing billing or spending.