CIDR - IPv4

A method for allocating IP address Used in Security Group rules and AWS networking in general They help to define IP address range 192.168.0.0/32 => 2^0 = One IP -> 192.168.0.0 192.168.0.0/31 => 2^1 = 2 IPs -> 192.168.0.0 - 192.168.0.1 192.168.0...