Imagine someone steals your Social Security number, Date of Birth and other identifying information. They then call your bank to transfer money into their account but the bank tells them it does not recognize the phone number from which they are calling and refuses the transfer. Well, that’s exactly what VPC service controls are. They allow you to secure your GCP resources in addition to Identity based Access Management.

Let’s go a step further and imagine for a second the thief also steals your mobile phone. When they call your bank asking to transfer money, the bank tells them you have prohibited transfers outside your bank. VPC service controls provide this as well in the form of egress policies.