To enable employees to access the internal webpage via a private domain URL (https://example.com) from the office network, the following steps are necessary: First, an alias record that points to the Application Load Balancer (ALB) must be created in the Route 53 private hosted zone. This is because alias records are the recommended way to route traffic to AWS resources, including ALBs, within a VPC. Second, a Route 53 Resolver inbound endpoint should be created. This allows DNS queries from the office network to be forwarded to the Route 53 Resolver within the VPC, enabling resolution of the private domain names. On the office DNS server, a conditional forwarder must be configured to forward DNS queries for the private domain to the Route 53 Resolver inbound endpoint. This setup ensures that DNS queries for the private domain are correctly resolved to the internal IP addresses of the ALB, allowing employees to access the internal webpage using the private domain URL.