How do you enable billing alerts in Google Cloud?

Enabling billing alerts in Google Cloud is accomplished through configuring budget alerts in the Billing section of the GCP console. This process allows users to set specific budgets for their projects and receive notifications when costs approach or exceed those budget thresholds.

By utilizing the built-in features in the Billing section, you can create a budget that reflects your spending goals and has the capability to send alerts via email or other methods when your spending reaches certain percentages of your budget. This proactive monitoring helps in managing costs effectively and preventing unexpected charges.

While customizing project settings is a standard practice for managing a project, it does not directly influence billing alerts specifically. Contacting Google Cloud support may assist with specific issues but does not inherently provide a way to set up alerts on your own spending. Similarly, third-party monitoring tools can be useful for various aspects of cloud management, but GCP's native billing alerts are designed specifically for this purpose, making option B the most direct and effective solution for enabling billing alerts.