You are designing a high-availability architecture for a web application. You want to ensure that if Google's 'us-central1-a' zone fails, your application gracefully redirects traffic to 'us-central1-b' and 'us-central1-f' without any manual intervention. Which GCE component is required?

Which Google Cloud service allows you to create and manage virtual machine instances on Google's infrastructure?

What is the primary difference between Preemptible VMs and Standard VMs?

Which tool would you use to create a custom machine type with a specific number of vCPUs and amount of memory?

Which feature of Managed Instance Groups (MIGs) allows the group to automatically add or remove instances based on CPU load?

What is 'Autohealing' in a Managed Instance Group?