Your company just completed the acquisition of Altostrat (a current GCP customer).

Your company just completed the acquisition of Altostrat (a current GCP customer). Each company has a separate organization in GCP and has implemented a custom DNS solution. Each organization will retain its current domain and host names until after a full transition and architectural review is done in one year. These are the assumptions for both GCP environments.

• Each organization has enabled full connectivity between all of its projects by using Shared VPC.

• Both organizations strictly use the 10.0.0.0/8 address space for their instances, except for bastion hosts (for accessing the instances) and load balancers for serving web traffic.

• There are no prefix overlaps between the two organizations.

• Both organizations already have firewall rules that allow all inbound and outbound traffic from the 10.0.0.0/8 address space.

• Neither organization has Interconnects to their on-premises environment.

You want to integrate networking and DNS infrastructure of both organizations as quickly as possible and with minimal downtime.

Which two steps should you take? (Choose two.)