What is the role of Cloud Router in GCP when used with Cloud VPN or Interconnect?

Question

Google Cloud (GCP) — Hard

What is the role of Cloud Router in GCP when used with Cloud VPN or Interconnect?

Accepted Answer

Cloud Router facilitates dynamic route exchange between GCP VPC and on-premises networks via BGP. This enables automatic route updates, ensuring seamless connectivity. Incorrect options, such as acting as a hardware firewall or providing NAT, are not Cloud Router's primary functions.