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AWS Route 53
Both NIOS and BloxOne DDI integrate with AWS Route 53.
Note that Route-53 Private Zones are only accessible to IP addresses located within the VPCs that are assigned to the Private Zones. This means you cannot query x.x.x.2 from on-prem. This is where NIOS integration comes in very handy.
The integration is bi-directional. Changes on an AWS Route 53 zone that are made on one platform will sync to the other.
The advantage of using BloxOne DDI / NIOS is that if you delete a record, you have the recycle bin.
Syncs every minute (configurable)
AWS (and Azure) refuse to allow zone transfer from their hosted DNS. This is why syncing to NIOS can be good.
AWS Route53 Hosted Zones are either “Public hosted” or “Private hosted”.
A single private zone can be made available to multiple VPC's.
Private hosted zones created using Amazon Route 53 cannot resolve resources outside of AWS VPCs nor can it respond to DNS requests outside of the VPCs.
For each VPC that you associate with a private hosted zone, you must set the Amazon VPC settings enableDnsSupport and enableDnsHostnames and to true. UPDATE - possibly enableDnsResolution and enableDnsHostnames