DNS Services provides a reliable, secure DNS service to manage and resolve domain names in a virtual network without the need to add a custom DNS solution. By using private DNS zones, you can use your own custom domain names and tailor your virtual network architecture to best suit your organization's needs. It provides name resolution for virtual machines (VMs) within a VPC network and between VPC networks. Additionally, you can configure zones names with a split-horizon view, which allows a private and a public DNS zone to share the name.