The key to understanding the way that subnetting works in AWS is to keep in mind that when you create a CIDR block, you are not actually creating any subnets. Subnets have to be created separately and ...

Subnets cannot overlap with one another. Now that I have explained the reasons why the two errors occur, let's talk about the situation in which any subnet CIDR that you enter triggers one of these ...

To implement IP-based routing for resource records on Route 53, customers create CIDR collections, with locations and CIDR blocks, that are associated with locations when defining resource records.