You are a GCP cloud architect working on a project with multiple VPCs. Your team needs to establish private connectivity between these VPCs without using external IPs. What should you recommend to meet this requirement while following Google's best practices?

*Explanation:* The correct option is **A. Implement VPC peering between all VPCs for private communication**. VPC peering allows private connectivity between VPCs without the need for external IPs, aligning with Google's best practices. Option B involves Cloud VPN, which uses encrypted tunnels and may introduce complexity. Option C references Google Cloud Interconnect, which might be overkill for simple VPC-to-VPC connectivity. Option D introduces dynamic routing, adding unnecessary complexity and may not be required in this scenario.